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Chapter 3
Term | Definition |
---|---|
Matter | Anything that has mass and takes up space. |
Elements | Substance made of only 1 kind of atom. |
Metals | Good conductors of electricity and heat. Can bend without breaking. Most have gray color. |
Semimetal | Sometimes like metals sometimes like nonmetals. |
Nonmetals | Do not conduct heat/electricity well. May be gas or solid. |
Atom | The basic building block of matter. Can't be any smaller. |
Atomic Theory | States every is made of atoms. |
Compound | A type of matter made of two or more elements. |
Molecule | The smallest particle of a compound that still acts like a compound. |
Proton | Positive charge. Found in the nucleus. |
Neutron | No charge. Found in nucleus. |
Electron | Negative charge. Orbits the nucleus. |
SOLID | Has a definite volume or shape. Particles are very close together, and don’t move past each other. Keeps its shape. |
LIQUID | Has a definite volume but not shape. Particles can move past each other. Takes shape of container |
Gas | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into a smaller volume |
PLASMA | Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge. |
MELTING POINT | Solid to liquid or liquid to solid. Same temperature as freezing point. |
EVAPORATION | When liquids become a gas |
CONDENSATION | When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |
BOILING POINT | The temperature at which evaporation occurs |
MIXTURE | Two or substances that mix together but each keeps its own identity |
SOLUTION | A mixture where substance spreads out evenly and will not settle |
SOLUTE | The substance being dissolved |
Solvent | What the substance is dissolved in |
SOLUBILITY | A way to measure how much a material dissolves into another |