I'm having trouble with some chemistry questions?!Thanks1.) you put your hand in a glass of cold water..what is the result? a. heat flows from your hand into the water b.cold flows from the water...

I'm having trouble with some chemistry questions?!Thanks1.) you put your hand in a glass of cold water..what is the result? a. heat flows from your hand into the water b.cold flows from the water into your hand c.temperature flows back and forth between your hand and the water d. heat flows back and forth between your hand and the water. 2.)which of the following statement is true.? a. freezing is the process by which a gas transforms to a liquid b.freezing is the opposite of melting c.freezing is the process by which liquids transforms into gases. d. freezing requires the addition of heat energy to a asubstance. 3.) which has the highest density? a. a gram of leaves b.a kilogram of leaves c.a kilogram of gold d. all have the same density 4. what describes a chemical property? 5. what describes a physical property of water? 6. for a homogenous moxture? a. air b.oil floating on the surface of water c.granite d.pizza THANKS SO MUCH STUCK ON THIS!

1 Answer | Add Yours

cgrant2's profile pic

cgrant2 | High School Teacher | (Level 1) Valedictorian

Posted on

1. Heat flows from your hand to the cold water in the process called diffusion. Heat moves from a place where it's highly concentrated to a place of lower concentration, but the solutions want to go to equilibrium. So the heat is going to flow between the hand and the cold water until its at equilbrium. The answer is d. 

2. Freezing is the opposite of melting. The answer is b.

3. Gold weighs a lot more than leaves. The molecular weight of gold is 196.97 grams/mole. The answer is c.

4. A chemical property is a property of matter that changes as a result of chemical reaction. The process of making pizza is a chemical process that requires chemical reactions. The answer is d.

5. Physical property is a property of matter that can be observed without an chemical reaction. Oil is more dense than water. This why oil floats on top of water.The answer is b. 

6. Homogenous mixture is a mixture that contains one type of element or compound. Graphite is a compound contains carbon. The answer is c. 

 

We’ve answered 318,983 questions. We can answer yours, too.

Ask a question