Jul
29
Has anyone taken Biology and Physical Science in the same year of high school?
Filed Under Physical Chemistry | 1 Comment
What about Biology and Chemistry together? I’m trying to decide which two to do at the same time.
By: Melody
By: Melody
Jul
29
How are physical and chemical properties based on the periodic table (Not a HW question)?
Filed Under Physical Chemistry | 1 Comment
I’m studying for my chemistry mid-term (yea, exams AFTER winter break) and I can’t find it in my textbook and my teacher won’t explain it. All help is appreciated 
By: melfy202
By: melfy202
Jul
24
This is for my Chemistry Final Exam.
By: Stephano
By: Stephano
Jul
22
When people are attracted to each other, they are often said to “have chemistry.” This term is also used to describe when two people get along really well or are a good match, as in “you two seem to really have good chemistry together.”
So why do we say chemistry? Is it really a chemical bond that binds us? Do we really react to the body chemistry of other people? There are scientists who say that pheromones, certain chemicals that our bodies secrete (as do other animals) that tend to attract other people of the opposite sex, are a key factor in why we are drawn to certain people and not others. In fact, there is evidence in nature that suggests this is true.
But do chemicals alone constitute an attraction? One would beg to differ with that. Our body chemistry alone cannot be the only factor that allows us to “like someone.” While it may play a role, there are many more aspects at play.
For example, the looks of a person play an important role in our first impression of them. And that does not mean only whether we find the other person attractive physically, or whether we think they are handsome or pretty in the face. Their hygiene, hairstyle, choice of clothing, tan (or lack of), whether they look high or under the influence of any drugs or alcohol, the way they walk, talk, their mannerisms… all of these things have a major effect on how we perceive someone at first glance.
It’s interesting how some will use the term “love at first sight” to describe someone that seems to be just their exact type, during that first impression. Perhaps body chemistry is in the mix, there, as well.
A person’s values, interests, and personality will have an impact on whether we like them and/or could see ourselves dating the person. If we are marriage types, we look to see if other people are someone we could settle down with. We also like to judge their appearance on whether they would be good to mate and have children with.
These are all things that could be loosely termed, “having good chemistry.” Isn’t it fascinating how we equate agreement to value? If we agree with something we see in someone, or something they say, or what they wear, and so on, we believe that they are more valuable, and we in fact like them more than we would if we did not have as much in common.
This also explains why so many of us, whether we admit it or not, resist adversity. If we don’t have a lot in common with someone (that can be cultural, grammatical, taste in music/moves, or otherwise), we don’t like them as much. We don’t like what is not like us. Why is that? We don’t want people to be exactly the same as us, but we want them to be similar. Isn’t that strange?
Obviously, there is rationale for why we want to have chemistry, whether in the literal chemical sense, or in the figurative sense. Spending time with someone means deciding what to do together. And that means you have to have some sort of common ground on what you like to do. It’s amazing how many couples don’t have that much in common, yet they get along fine. However, sometimes those relationships “get old.”
One aspect in a person that has universal appeal is when they care about you and love you. Often, love itself transcends other types of superficial chemistry. How much does chemistry and having things in common affect how you treat people and how much does it affect whom you chose to date? Food for thought!
By: Gabriel Adams
So why do we say chemistry? Is it really a chemical bond that binds us? Do we really react to the body chemistry of other people? There are scientists who say that pheromones, certain chemicals that our bodies secrete (as do other animals) that tend to attract other people of the opposite sex, are a key factor in why we are drawn to certain people and not others. In fact, there is evidence in nature that suggests this is true.
But do chemicals alone constitute an attraction? One would beg to differ with that. Our body chemistry alone cannot be the only factor that allows us to “like someone.” While it may play a role, there are many more aspects at play.
For example, the looks of a person play an important role in our first impression of them. And that does not mean only whether we find the other person attractive physically, or whether we think they are handsome or pretty in the face. Their hygiene, hairstyle, choice of clothing, tan (or lack of), whether they look high or under the influence of any drugs or alcohol, the way they walk, talk, their mannerisms… all of these things have a major effect on how we perceive someone at first glance.
It’s interesting how some will use the term “love at first sight” to describe someone that seems to be just their exact type, during that first impression. Perhaps body chemistry is in the mix, there, as well.
A person’s values, interests, and personality will have an impact on whether we like them and/or could see ourselves dating the person. If we are marriage types, we look to see if other people are someone we could settle down with. We also like to judge their appearance on whether they would be good to mate and have children with.
These are all things that could be loosely termed, “having good chemistry.” Isn’t it fascinating how we equate agreement to value? If we agree with something we see in someone, or something they say, or what they wear, and so on, we believe that they are more valuable, and we in fact like them more than we would if we did not have as much in common.
This also explains why so many of us, whether we admit it or not, resist adversity. If we don’t have a lot in common with someone (that can be cultural, grammatical, taste in music/moves, or otherwise), we don’t like them as much. We don’t like what is not like us. Why is that? We don’t want people to be exactly the same as us, but we want them to be similar. Isn’t that strange?
Obviously, there is rationale for why we want to have chemistry, whether in the literal chemical sense, or in the figurative sense. Spending time with someone means deciding what to do together. And that means you have to have some sort of common ground on what you like to do. It’s amazing how many couples don’t have that much in common, yet they get along fine. However, sometimes those relationships “get old.”
One aspect in a person that has universal appeal is when they care about you and love you. Often, love itself transcends other types of superficial chemistry. How much does chemistry and having things in common affect how you treat people and how much does it affect whom you chose to date? Food for thought!
By: Gabriel Adams
Jul
22
what is an appropriate time to give up the va jay jay wen intelletual physical chemistries are dominant?
Filed Under Physical Chemistry | 5 Comments
been involved for only 1 week
By: wifey8182
By: wifey8182
Jul
21
Regular physical activity provides enormous health benefits. It helps reduce heart disease, cancer, type 2 diabetes and many other diseases and metabolic conditions. Regular fitness exercise is also highly beneficial for weight reduction and weight maintenance, and may improve brain chemistry to reduce depression. By contrast, health studies that have monitored the wellbeing of large groups of people over many years clearly show that inactivity significantly increases the risk of overweight, obesity and chronic diseases.
New brain cell development, improved cognition and memory. Exercise stimulates the formation of new brain cells. Researchers found that the areas of the brain that are stimulated through exercise are responsible for memory and learning. For instance, older adults who engage in regular physical activity have better performances in tests implying decision-making process, memory and problem solving.
Heart Disease and Stroke. Daily physical activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow, and increasing your heart’s working capacity. Optimizing each of these factors can provide additional benefits of decreasing the risk for Peripheral Vascular Disease.
Cholesterol lowering effect. Exercise itself does not burn off cholesterol like it does with fat, however, exercise favorably influences blood cholesterol levels by decreasing LDL (bad) cholesterol, triglycerides and total cholesterol and increasing HDL (good) cholesterol.
Physical activity helps to reduce body fat by building or preserving muscle mass and improving the body’s ability to use calories. When physical activity is combined with proper nutrition, it can help control weight and prevent obesity, a major risk factor for many diseases.
Exercise has also been found to increase levels of “brain-derived neurotrophic factor” (BDNF). This substance is thought to improve mood, and it may play a role in the beneficial effects of exercise. BDNF’s primary role seems to be to help brain cells survive longer; so this may also explain some of the beneficial effects of exercise on dementia
Among the symptoms of depression are feelings of worthlessness and hopelessness. Physical exercise often leads to a sense of accomplishment that can increase good feelings about yourself when you need it most. Exercise can also help you feel better about your appearance and your self-worth. Meeting small goals is an excellent way to start boosting self-confidence with the feeling of accomplishment you take in completing challenges.
The health benefits of exercise are explicable in terms of favourable physiological, psychological, and biochemical changes and improvements in function. Their scope is greater than has been supposed. Motivating sedentary people to pursue these benefits is not straightforward. They are reluctant to undertake even moderate exercise, and they become immediately aware of their limited tolerance for physical work and the discomfort that it provokes. It takes several weeks of regular exercise to see an improvement in their capacity for effort and for there to be a training effect.
It was found that exercise had the strongest effect on boosting patients’ physical function, such as improving their ability to climb stairs or walk a certain distance. It improved patients’ body composition, increasing the percentage of lean muscle mass to total weight. Exercise reduced some symptoms, such as nausea and vomiting and pain, and modest improvements were seen in fatigue, mood and quality of life. Given the relatively small benefits for exercise identified by their analysis, the researchers suggest combining exercise with other inventions designed to improve cancer patients’ physical and mental health.
By: peterhutch
New brain cell development, improved cognition and memory. Exercise stimulates the formation of new brain cells. Researchers found that the areas of the brain that are stimulated through exercise are responsible for memory and learning. For instance, older adults who engage in regular physical activity have better performances in tests implying decision-making process, memory and problem solving.
Heart Disease and Stroke. Daily physical activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow, and increasing your heart’s working capacity. Optimizing each of these factors can provide additional benefits of decreasing the risk for Peripheral Vascular Disease.
Cholesterol lowering effect. Exercise itself does not burn off cholesterol like it does with fat, however, exercise favorably influences blood cholesterol levels by decreasing LDL (bad) cholesterol, triglycerides and total cholesterol and increasing HDL (good) cholesterol.
Physical activity helps to reduce body fat by building or preserving muscle mass and improving the body’s ability to use calories. When physical activity is combined with proper nutrition, it can help control weight and prevent obesity, a major risk factor for many diseases.
Exercise has also been found to increase levels of “brain-derived neurotrophic factor” (BDNF). This substance is thought to improve mood, and it may play a role in the beneficial effects of exercise. BDNF’s primary role seems to be to help brain cells survive longer; so this may also explain some of the beneficial effects of exercise on dementia
Among the symptoms of depression are feelings of worthlessness and hopelessness. Physical exercise often leads to a sense of accomplishment that can increase good feelings about yourself when you need it most. Exercise can also help you feel better about your appearance and your self-worth. Meeting small goals is an excellent way to start boosting self-confidence with the feeling of accomplishment you take in completing challenges.
The health benefits of exercise are explicable in terms of favourable physiological, psychological, and biochemical changes and improvements in function. Their scope is greater than has been supposed. Motivating sedentary people to pursue these benefits is not straightforward. They are reluctant to undertake even moderate exercise, and they become immediately aware of their limited tolerance for physical work and the discomfort that it provokes. It takes several weeks of regular exercise to see an improvement in their capacity for effort and for there to be a training effect.
It was found that exercise had the strongest effect on boosting patients’ physical function, such as improving their ability to climb stairs or walk a certain distance. It improved patients’ body composition, increasing the percentage of lean muscle mass to total weight. Exercise reduced some symptoms, such as nausea and vomiting and pain, and modest improvements were seen in fatigue, mood and quality of life. Given the relatively small benefits for exercise identified by their analysis, the researchers suggest combining exercise with other inventions designed to improve cancer patients’ physical and mental health.
By: peterhutch
Jul
21
What is the lowest possible temperature that can be obtained? (in kelvins)?
Filed Under Physical Chemistry | 3 Comments
I am a student of chemistry. Please describe related to physical chemistry.
I am asking what is the lowest possible temperature that can be obtained PRACTICALLY (it is not zero)?
By: ශාකුන්තල | shaakunthala
I am asking what is the lowest possible temperature that can be obtained PRACTICALLY (it is not zero)?
By: ශාකුන්තල | shaakunthala
Jul
18
Physical Chemistry. (of colloidal particles) to flocculate or cause to flocculate by adding an electrolyte to an electrostatic colloid.
Also… Can Coagulation be used to seperate a mixture?
By: LeslieLikesLollipops
Also… Can Coagulation be used to seperate a mixture?
By: LeslieLikesLollipops
Jul
18
How is burning a piece of paper considered a chemical change (in terms of chemistry?)?
Filed Under Physical Chemistry | 2 Comments
I have to do a miniature science project for fall intercession homework, demonstrating a physical change and chemical change. I know what to do for the physical change part of my project, but I’m not so sure about the chemical change. I was thinking about burning a piece of paper, and I can see the evidence of it being a chemical change, but I’m not sure exactly how it is a chemical change. Can someone explain this to me better? Thanks much!
By: Kiefer H
By: Kiefer H
Jul
18
Think chemistry in relationships is something that “just happens?” If you do, the truth might surprise you. Sure, you probably can’t create chemistry where none exists, but if that initial spark is there, there’s plenty you can do to fan the flames.
Understand what chemistry is!
If you’ve never really felt strong chemistry with another person, it can be hard to get an idea of what it is. What most people call chemistry is a sense that the two of you are just meant to be together. You’re both perfectly at ease with each other and have a strong physical attraction for each other. While it might have something to do with looks and pheromones, most of it is mental. It comes from you and your sweetie having the same beliefs, dreams, and maybe even habits and pet peeves.
Develop a rapport!
Before you can build up any chemistry, you need to have a good rapport first. If you’ve only seen each other for one or two dates, that rapport may not quite be there yet. To create it, look for a conversation topic you can really bond over. Just make sure it’s something pleasant and low-stress, though. You may discover you both love discussing ways to end famine in Africa, but that subject doesn’t help your partner associate you with pleasure and fun.
Use humor!
Laughter is not only fun, it also makes us feel at ease with another person. You don’t have to be a professional comedian. Even an attempt at humor in your own style can work. Just keep it clean and neutral so you don’t offend your date right off the bat.
Adrenaline is your friend!
Studies have shown that couples who met in an exciting situation-whether pleasurable or not-tend to find each other more attractive. More so than couples who met under normal circumstances. It works because the mind associates any excitement with the person we’re with at the time and mistakes it for physical attraction. Make use of this by planning a date that will get the adrenaline pumping like a scary movie, a roller coaster ride, or even whitewater rafting.
Express yourself!
You can’t have chemistry in relationships with people who don’t know the real you. Instead of keeping your opinions to yourself in hopes of hiding anything your partner might not like about you, make it a point to share your thoughts and feelings about important issues. Sometimes just a single off-hand comment can make your date fall for you hard.
Enhance the physical!
Some tips for how to increase chemistry in relationships will tell you to touch your date on the knee or arm early on. You want to be careful with that, though. Get physical too early on and you could just end up turning your partner off. Instead, start by just talking about what physical features you each find most attractive in the opposite sex and then using the info you gain to your advantage.
Chemistry in relationships may be mysterious and hard to control, but that doesn’t mean you can’t help it along a little. Make sure you start with a good rapport, throw in a little humor and excitement and you’ll be off to a good start.
Elaine is the author of several books on the subject of dating and relationships. Find Your Future Husband is a book that teaches women how to find the right man who is looking for a committed relationship and marriage. 101 Reasons Why Men Stop Calling is another popular book by the author.
By: Elaine
Understand what chemistry is!
If you’ve never really felt strong chemistry with another person, it can be hard to get an idea of what it is. What most people call chemistry is a sense that the two of you are just meant to be together. You’re both perfectly at ease with each other and have a strong physical attraction for each other. While it might have something to do with looks and pheromones, most of it is mental. It comes from you and your sweetie having the same beliefs, dreams, and maybe even habits and pet peeves.
Develop a rapport!
Before you can build up any chemistry, you need to have a good rapport first. If you’ve only seen each other for one or two dates, that rapport may not quite be there yet. To create it, look for a conversation topic you can really bond over. Just make sure it’s something pleasant and low-stress, though. You may discover you both love discussing ways to end famine in Africa, but that subject doesn’t help your partner associate you with pleasure and fun.
Use humor!
Laughter is not only fun, it also makes us feel at ease with another person. You don’t have to be a professional comedian. Even an attempt at humor in your own style can work. Just keep it clean and neutral so you don’t offend your date right off the bat.
Adrenaline is your friend!
Studies have shown that couples who met in an exciting situation-whether pleasurable or not-tend to find each other more attractive. More so than couples who met under normal circumstances. It works because the mind associates any excitement with the person we’re with at the time and mistakes it for physical attraction. Make use of this by planning a date that will get the adrenaline pumping like a scary movie, a roller coaster ride, or even whitewater rafting.
Express yourself!
You can’t have chemistry in relationships with people who don’t know the real you. Instead of keeping your opinions to yourself in hopes of hiding anything your partner might not like about you, make it a point to share your thoughts and feelings about important issues. Sometimes just a single off-hand comment can make your date fall for you hard.
Enhance the physical!
Some tips for how to increase chemistry in relationships will tell you to touch your date on the knee or arm early on. You want to be careful with that, though. Get physical too early on and you could just end up turning your partner off. Instead, start by just talking about what physical features you each find most attractive in the opposite sex and then using the info you gain to your advantage.
Chemistry in relationships may be mysterious and hard to control, but that doesn’t mean you can’t help it along a little. Make sure you start with a good rapport, throw in a little humor and excitement and you’ll be off to a good start.
Elaine is the author of several books on the subject of dating and relationships. Find Your Future Husband is a book that teaches women how to find the right man who is looking for a committed relationship and marriage. 101 Reasons Why Men Stop Calling is another popular book by the author.
By: Elaine