1. what charge is a neutron?
- 2 decibles=2
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Other questions in this quiz
2. what does each group[a vertical column] contain?
- elements with 12 protons
- elements with similar properties
- elements with different properties
3. what is an element?
- a substance made of compounds
- a substance that is made of only one type of atom
- a substance made of two types of atoms
- a mixture of different atoms
4. what charge is an atom
- 2 decibels=2
5. atoms have a small central ...