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
Changes in Matter
| Question | Answer |
|---|---|
| What are physical properties of matter? | Properties that can be observed without changing the matter into a different substance |
| What are chemical properties of matter? | Properties that require a chemical reaction to observe |
| The freezing point of a substance is where both freezing and _____ occur. | Melting |
| What are some signs of a chemical ,change? | Release of light and heat (like an explosion), release of gas (bubbling) |
| What are properties of liquids? | Take the shape of their containers, flow easily, particles slide past each other. |
| Melting is an example of a _____ change | Physical |
| True or false: When matter melts it has the same mass as before it melted. | True |
| In a chemical reaction, reactants are on the _____ side of the arrow | Left |
| Endothermic reactions take in heat from the environment, so they feel _____ | Cold |
| True or false: The law of conservation of mass states the the mass at the beginning of a reaction must be equal to the mass after a reaction takes place. | True |
| The sudden appearance of a solid is an example of a _____ change | Chemical |
| How well a material conducts electricity is an example of a _____ property | Physical |
| What happens during chemical reactions? | Atoms are rearranged and new compounds are formed. |
| What is a compound? | Two or more elements chemically combined. |
| The release of gas is a sign of a _____ change. | Chemical |
| If a piece of matter is smaller than another piece of matter but weighs the same, it must have a greater _____ | Density |
| Ice melting is a __________ reaction since it requires heat to be taken in. | Endothermic |
| The physical property of how well a material lets electricity flow through it is called __________. | Conductivity |
| How can you tell where a new element starts in a chemical formula? | A capital letter (eg: H2O, H=hydrogen, O=oxygen) |
| What are some examples of a chemical change? | Items burning, rusting |
| What is an example of a physical change? | Phase change (melting, freezing, evaporating, etc) |
| What is the law of conservation of mass? | During a chemical reaction: matter can never be created or destroyed, it only changes form. |
Created by:
smorrow801