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elements and atoms 7
elements and sparta
| Question | Answer |
|---|---|
| Anything that has mass and takes up space. | matter |
| They are the simplest pure substance and can not be broken down. | elements |
| They are a pure substance made up of two or more elements combined chemically. | compound |
| They are a pure substance made up of two or more elements. | mixture |
| It is the smallest particle of an element. | atom |
| This is a well tested idea that explains and connects observations. | scientific theroy |
| It is a visual, mental, and physical representation of an idea which enhances understanding. | model |
| These are negatively charged particles. | electrons |
| This is the central region of an atom. | nucleus |
| These are the positively charged particles. | protons |
| It represents the specific amount of energy. | energy level |
| These are electrically neutral particles. | neutrons |
| The electrons that have the highest energy level and are held most loosly. | valence electrons |
| It is the force of attraction that holds two atoms together as a result of rearrangement of electrons between them. | chemical bond |
| One or two letter that identify an element. | symbol |
| Identifies the number of protons in the nucleus of an atom and can be found above the symbol on the periodic table. | atomic number |
| It identifies the row of elements across the periodic table. | period |
| Elements in the same column are called what? | groups |
| What are Group 18 elements known as? | noble gases |
| What are Group 17 elements known as? | halogens |
| What are Group 1 elements known as? | alkali metal family |
Created by:
lawalker
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