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unit 3 chapter 2 ?
5th grade Science unit e chapter 2 questions
| Question | Answer |
|---|---|
| Atoms are held together by the attraction between | electrons and protons |
| The atomic number of an element is the number of ___________________ its nucleus | protons |
| In the Periodic Table, elements are arranged by atomic number and _______________________. | similar properties |
| Which is NOT true of metals? | They are good insulators |
| What is the formula for a molecule with 1 carbon atom, 2 hydrogen atoms and 3 oxygen atoms? | H2CO3 |