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PS: FE 2
| Question | Answer |
|---|---|
| radioactive decay that releases electrons | beta decay |
| process where the body produces and uses energy from food | metabolism |
| a damaged or incorrectly copied gene in the DNA | mutation |
| process that involves splitting the atomic nucleus into smaller parts | nuclear fission |
| substance composed of two or more types of atoms bonded together | compound |
| pure substance | element |
| an incomplete mixture where the molecules do not chemically bond together | heterogeneous mixture |
| a complete mixture where the molecules chemically bond together | homogeneous mixture |
| chemical bond where atoms share electrons | covalent bond |
| chemical bond where atoms give and take electrons | ionic bond |