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science - chemistry
6th grade
| Question | Answer |
|---|---|
| The smallest unit of an element that maintains the properties of that element. | Atom |
| a substance that cannot be seperated or broken down into simpler substances by chemical means | Element |
| a subatomic particle that has a positive charge and that is found in the nucleus of an atom | proton |
| a subatomic particle that has no charge and that is found in the nucleus of an atom | neutron |
| a subatomic particle that has a negative charge. | electron |
| in physical science, an atom's central region, which is made up of protons and neutrons | nucleus |
| a charged particle that forms when an atom or a group of atoms gains or loses one or more electrons | ion |
| How many electrons are in each atom? | The atomic number tells us. |
| How do we find the number of neutrons? | Round the atomic mass to the nearest whole number, then subtract the atomic numbers. |
| First enery level of an atom can have _______ electrons? | two |
| The second energy level of an atom can have ________ electrons | eight |
| The outermost energy level of an atom can have _______ electrons. | eight |
| How many protons are in an atom? | The atomic number tells us. |
Created by:
jjscaputo
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