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chapter3
charpter 3
Term | Definition |
---|---|
Matter | Everything that has mass and takes up space |
Element | The ingredient that makes up all other substance. Can't be broken down into other substance |
Metals | Good conductors of electricity and heat. Can bend without breaking. Most have the color gray . |
Nonmetals | Do not conduct heat/ electricity very well.May be a gas or a solid. |
Semi-Metals | Sometimes likes metals and sometimes like nonmetals |
atoms | the smallest part of a element that still acts like that element |
atomic theory | states that everything is made of atoms |
Compound | a type of matter made of atoms |
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 don't slide by each other .Vibrate in place.particles are very close to each other. |
liquid | has a definite volume but no definite shape.particles can slide by each other. forces hold particles can slide by each other.forces hold particles together takes the shape of its contanier |
gases | no definite volume or shape. particles are far apart from each other . particles are far apart from each other. |
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 a solid. same temperature as freezing point. |
Evaporation | when liquids be comes a gas. |
condensation | when gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |
boiling point | the temperature which evaporation occurs. |
mixture | two or substance 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 dissolved into another. |