vocab word | definition |
Matter | everything that has mass and takes up space |
Element | the ingredients that make up of all other substances. cant be broken down |
Metals | good conductors of electricity and heat. Can bend
without breaking. Most have a gray color |
Non-Metals | 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 |
Molocule | 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 nucleaus |
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 being dissolved in |
Solubility | a way to measure how much material dissolves in water |