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Chem Interaction C 1
Chemical Interaction Chapter One Section 1
Question | Answer |
---|---|
Matter | anything that has mass and occupies space |
Element | a substance that can't be broken down into any other substances by chemical or physical means |
Compound | a substance made of 2 or more elements chemically combined in a specific ratio or proportion |
Mixture | 2 or more substances that are mixed together but not chemically combined |
Atom | the smallest particle of an element |
Scientific theory | a well-tested idea that explains and connects a wide range of observations |
Model | physical, mental , visual, and other representations of an idea to help people understand a concept that they can't observe directly |
Electrons | negatively charged particles that move around outside the nucleus of an atom |
Nucleus | the central core of an atom, containing protons and neutrons |
Protons | small, positively charged particles that are found in the nucleus of an atom |
Energy level | the specific amount of energy an electron has |
Neutrons | small , uncharged particles that are found in the nucleus of an atom |