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18 Cards in this Set
- Front
- Back
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characteristics of matter
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gas
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characteristics of matter
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liquid
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characteristics of matter
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solid
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characteristics of matter
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matter is made up of elements
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characteristics of matter
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plasma
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characteristics of matter
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volume
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characteristics of matter
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atoms
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characteristics of matter
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matter is made of basic building blocks
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atom
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the smallest building block of matter; smallest unit of an element that retains the properties of that element. atoms are made up of even smaller particles
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an element
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is made up of only one kind of atom; is a material that can't be broken down into anything simpler by chemical reactions
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nucleus
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the center of an atom. it's made up of protons and neutrons
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proton
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a particle with one unit of positive electric charge
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neutron
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a particle with no electric charge. it's neutral
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electrons
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smaller particles with one unit of negative electric charge each. they move around in space outside the nucleus
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molecules
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particles with more than one atom joined together
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scientists describe molecules by
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combining letters and numbers into a chemical formula. the letters tell which type of elements are in the molecule
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chemical elements
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each have a name and a symbol. first letter is always capitalized. second letter isn't capitalized
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atomic number
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the number of protons in an atom
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