Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch. 1: Intro To Chem
| Question | Answer |
|---|---|
| What is Chemistry? | The study of matter and energy and the interactions between them |
| What are the 2 requirements for something to be classified as matter? | 1. It has mass. 2. It occupies space. |
| What is energy? | The ability to do work |
| Are forms of energy considered matter? Why or why not? | No, because they don't have mass |
| What is mass? | The amount of matter in an object |
| What is volume? | The amount of space an object occupies |
| What is weight? | A type of force that depends on the gravitational force |
| What is the difference between mass and weight? | Mass stays the same, and weight changes as the gravitational force changes. |
| Describe solids. | Definite shape and volume |
| Describe liquids. | Definite volume, indefinite shape |
| Describe gases. | Indefinite shape and volume |
| What are the 3 things that states of matter depend on? | 1. Temperature 2. Pressure 3. Strength of the forces holding particles together |
| What is a physical property? | A property that doesn't change the identity of a substance |
| What is a chemical property? | A property that changes substance into another substance by going through a chemical reaction |
| Is toxicity a physical or chemical property? | Chemical |
| Is hardness a physical or chemical property? | Physical |
| What happens during a physical change? | A substance changes its physical appearance but not its chemical composition |
| What happens during a chemical change? | A substance changes into another substance by going through a chemical reaction |
| What is an intensive property? | A physical property that doesn't depend on the quantity |
| What is an extensive property? | A physical property that depends on the quantity |
| What is a substance? | A material that is chemically the same throughout |
| What is a pure substance? | Matter that has distinct properties, definite composition, and can't be separated into simpler substances by physical means |
| What is an element? | A pure substance that can't be reducted to simpler substances by normal chemical means |
| How many elements are there in all? | 117 |
| How many elements are naturally occuring? | 92 |
| How many elements are synthesized in a lab? | 25 |
| What are compounds? | Pure substances that are a combination of 2 or more elements and can be broken into simpler substances by chemical means |
| What is an atom? | The smallest particle of an element? |
| What are molecules? | A combination of 2 or more atoms |
| What are mixtures? | A combination of 2 or more pure substances |
| What is a homogeneous mixture? | A mixture that is uniform throughout and has only 1 visibly distinct face |
| What is a heterogeneous mixture? | A mixture that isn't uniform throughout and has 2 or more different visibly distince faces |
| What are homogeneous mixtures also called? | Solutions |
| Can mixtures be separated by physical means? | Yes |
| What are colloids? | Particles too large to be considered homogeneous and too small to be considered heterogeneous |
| What arethe diatomic elements? | Hydrogen, Nitrogen, Oxygen, Fluorine, Bromine, Chlorine, and Iodine |
Created by:
bnahmed101
Popular Chemistry sets