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3 Cards in this Set
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- Back
- 3rd side (hint)
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Chemistry element what is a compound? |
Elements can combine to form compounds. Compounds are substances that contain two or more elements in a fixed ratio. Compounds are table salt and water. |
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Chemistry element How many essential elements. |
There are 25 essential elements to life. Four elements make up majority of most cells. Oxygen, carbon, hydrogen, and nitrogen. |
What are the four main elements? |
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Atomic structure what is atomic # vs. Mass? |
Atomic number determines which element it is of protons. Mass is a measure of material in an object. The atoms mass number sum the number of protons and neutrons in its nucleus. |
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