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Science Vocabulary 1
Term | Definition |
---|---|
Matter | Has mass and takes up space. |
Atoms | Tiny building blocks of matter. |
Element | Substance that contains only one type of atom. |
Proton | Positively charged particle in the nucleus of an atom. |
Neutron | Particle without an electrical charge in the nucleus of an atom. |
Electron | Negatively charged particle of an atom. |
Atomic Number | The number of protons in an atom. |
Mass number | The number of protons and the number of neutrons in an atom. |
Isotopes | Atoms of the same element that have different numbers of neutrons. |
Compound | Matter that is made up of two or more elements. |
Ion | Electrically charged atom. |
Mixture | A combination of substances that do not change or combine chemically. |
Heterogeneous Mixture | Mixture which are NOT mixed evenly. |
Homogeneous Mixture | Mixture which are EVENLY mixed. |
Solution | Mixture which one substance is completely and evenly mixed in another substance. |
Density | A physical property dividing the mass of an object. |