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3.1 Science
Question | Answer |
---|---|
Matter | Everything that has mass and takes up space |
element | |
metals | good conductors of electricity and heat. Can bend without breaking. Most have a gray color |
nonmetals | do not conduct heat / electricity very well. May be a gas or a solid |
Semi-metals | sometimes like metals and sometimes like nonmetals |
atom | the smallest part of an element that still acts like that element |
Atomic theory | states that everything is made of atoms |
compound | A type of matter made of two or more elements |
molecule | smallest particle of a compound that still acts like that compound |
proton | Positive charge. Found in the nucleus |
neutron | No charge. Found in the nucleus |
electron | Negative charge. Orbits the nucleus |
Solid | Has a definite shape and volume. Particles are very close together, and don’t move past each other. Keeps shape |
liquid | Has a definite shape and volume. Particles are very close together, and don’t move past each other. Keeps shape |
gas | Definite volume but not shape, particles can move past each other. Takes shape of container |
Plasma | |