Question | Answer |
is the study of the properties of matter and how matter changes | Chemistry |
anything that has mass and takes up space | Matter |
3 types of matter: | solid, liquid, gas |
particles made of crystals arranged in a regualr pattern | Crystalline solid |
give 3 examples of a crystalline solids | sugar, salt, quartz |
particles are not arranged in a regualr pattern; does not melt a a regular temp | amorphous solid |
3 examples of amorphous solids | rubber, plastic, glass |
has a definite volume but no definite shape; take shape of container it is in | Liquid |
water molecules are strongly attracted to each other and form a type of skin at the surface | surface tension |
liquids resistance to flowing | viscosity |
slow flow | high viscosity |
quick flow | low viscosity |
2 examples of high viscosity | honey, syrup |
2 examples of low viscosity | water,gas |
no definite shape/volume; particles move to spread out to fill all the space availble | gas |
a single kind of matter; has a specific set of properties | pure substance |
give and example of a pure substance | anything on the periodic table |
two or more substances mised togther but not checimally combinded. Each substance in a mixture keeps its individual properties. not mixed to a set ratio | mixtures |
in what type of mixture can you see the different parts? | hetergenenous mixture |
give and example of a hetergenous mixture | salad |
in what type of mixture cant you see the different parts? | homogenous mixture |
example of a homogenous mixture | sugar in water, air |
a well mixed mixture containing a slovent and at least on solute that has the same properties throughout | solution |
a pure substance that cannot be broken down into substances by checimal or physcial means | elements |
a pure substance made up of two or more elements checimallt combinde | compounds |
give and example of a compound | water |
a change in a substance that does not change its identity-any phase change | physcial change |
change in matter that produces one or more new substances differ from the orignal substance; change in identity | checimal change |
give an example of a physcial and checimal change | P: bending C:burning |
change in state from solid to liquid | melting |
change in state from liquid to solid | freezing |
change in state from liquid to gas | vaporization |
vaporization from the surface of a liquid | evaporation |
liquid changes to gas below and at the surface temp.--causes bubbles | boiling |
change in state from gas to liquid.this is the opposite of vaporization. particles of gas loose enough thermal energy to turn to a liquid | condensation |
solids do not pass through a liquid phase as they go directly from a solid to gas | sublimation |
what is being dissloved | solute |
what is doing the dissolving | slovent |
a measurment of how much solute can dissolve into a solution at a given temp | solubility |
a solvent that can hold more solute | unsaturated solution |
a solvent that cant hold anymore sloute | saturated solution |
a solution that appears to be saturated but can still hold more solute when heated | supersaturated solution |
something that will not dissolve in a certain solvent | insoluble |
name 3 ways to make a sloute dissolve fater: | 1. stir/shake 2. change amt of solvent/solute 3.increase temp of solvent |
is a mixture that has only a little solute dissolved in a certain amount of slovent | dilute solution |
is a solution that has a lot of solute dissolved in the solvent | concentrated solution |
is a mixture in which particles can be well seen and easily seperated by filtration. | suspension |