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Chemistry Test
| Question | Answer |
|---|---|
| Two particles found in the nucleus of an atom. | Protons and neutrons |
| The 4 groups on the Periodic Table. | Metals, semi-metals, non-metals, noble gasses |
| What type of bonds are forces that hold atoms together in a compound? | Chemical |
| What type of charge do protons have? | Positive |
| What type of charge do neutrons have? | Neutral |
| What type of charge do electrons have? | Negative |
| Matter made of just one kind of atom. | Element |
| Atoms that have either lost or gained electrons and are electrically charged. | Ions |
| What type of bonds are formed when atoms share electrons? | Covalent |
| In which model of an atom do electrons move in orbits, or in the same path and direction? | Bohr |
| In which model of an atom do electrons move randomly, or in all directions around the nucleus of an atom? | Electron cloud |
| Substance formed when two or more elements combine chemically. | Compound |
| What type of bonds are formed from the attraction of oppositely charged ions, or atoms that have lost or gained electrons? | Ionic |
| Taste bitter, feel slippery, and are used in most cleaning products. | Bases |
| Help with digestion in our bodies, react with metals and carbonates, and when found in foods make them taste sour. | Acids |
| What type of change occurs when a substance changes its size or state? | Physical |
| What type of change occurs when atoms are changed and new substances are created? | Chemical |
| These compounds have covalent bonds. | Molecules |
| What pH balance does a neutral substance have? | 7 |
| Which pH balance is an example of an acid? | 5 |
| Which pH balance is an example of a base? | 12 |
| An atom becomes negatively charged when it __________ an electron. | Gains |
| With bases, litmus paper changes from what color to what color? | Red to blue |
| With acids, litmus paper changes from what color to what color? | Blue to red |
| An atom becomes positively chared when it ___________ an electron. | Loses |
| What are the elements in a column of the periodic table called? | Family |
Created by:
massameno
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