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
ChemistryTest9/13/12
Unit One- Introduction to Chemistry
| Question | Answer |
|---|---|
| matter | anything that takes up space and has mass |
| chemistry | the study of the structure, properties, and composition of substances, and the changes that substances undergo. |
| physical property | a quality of a substance that can be observed or measured without changing the substance's chemical composition |
| mixture | a physical blend of two or more substances that are not chemically combined. |
| element | a substance that cannot be changed into simpler substances under normal laboratory conditions |
| compound | a substance that can be separated into simpler substances (elements or other compounds) only by chemical reaction. |
| chemical property | the ability of a substance to undergo chemical reactions and to form new substances |
| energy | the capacity for doing work; it exists in several forms, including chemical, nuclear, eletrical, radiant, mechanical and thermal energies. |
| What are the steps of the scientific method? | Observation -> Hypothesis -> Experiments -> theory |
| What is the difference between homogenous and heterogeneous? | A heterogeneou mixture is not a uniform composition, but a homogeneous mixture is uniform/the same |
| What are the 5 probable sings of a chemical change? | 1.color 2.bubbling(making gas) 3. the making/breaking down of a solid 4.temperature 5.oder |
| Describe elements' atoms | they are the same |
| Describe compounds' atoms | different atoms |
| Describe mixtures' atoms | different atoms that are not chemically combined |
| What is the relative volocity of a liquid? | The molecules are farther apart and move faster then the molecules of a solid |
| What is the relative volocity of a gas? | The molecules are futher apart and move even faster that the molecules of a liquid. |
| carbon | element |
| nickel | element |
| copper | element |
| oxygen | element |
| aluminum | element |
| carbon dioxide | compound |
| water | compound |
| baking soda | compound |
| table sugar | compound |
| air | mixture |
| plastics | mixture |
| fabric | mixture |
| wood | mixture |
| well water | mixture |
| bottled water | mixture |
| a nickel | mixture |
| a penny | mixture |
| brass | mixture |
| bronze | mixture |
| baking powder | mixture |
| steel | mixture |
| physical properties | color, solubility, odor, hardness, density, melting point, and boiling point. |
| Chemical properties | rust, rot, burn, decompose, ferment, expode, and corrode |
Created by:
Jen Walls
Popular Chemistry sets