Science study

beaker

beaker

container for mixing and heating

test tube

hold small liquids

Bunsen burner

Gas flame

wire gauze

spreads heat evenly

retort ring

holds test tube while heating

conical flask

mixing and heating

tongs

lifting with heat resistant material

spatula

used to scoop small amounts of chemicals

stirring rod

to stir and mix

test tube rack

to hold multiple test tubes up right

Safety glasses

to protect eyes

filter tunnel

used with filter paper to filter substances

thermometer

measure temperature

tripod

to support flasks and beakers while heating

measuring cylinder

used to measure volume accurately

heat proof mat

to prevent damage to work space

Fair test

only one variable is changed while all the others stay the same

hypothesis

testable statement about what you think will happen

independent variable

the one changed variable

dependent variable

The variable that measures the change

controlled variable

The variable that stays that same

reliable experiment

repeat to check results are consistent

solid to liquid

melting

liquid to gas

boiling

solid to gas

sublimation

gas to liquid

condensation

liquid to solid

freezing

gas to solid

deposition

absorbing heat

solid to liquid to gas

releasing heat

gas to liquid to solid

observations

things you see

qualitative

observations using 5 senses

quantitative

observations through numerical data

inferences

educated guess

melting point

when a solid turns into a liquid

boiling point

when a liquid turns into a gas

anything that has mass and volume( takes up space)

Matter (Def)

3 states of matter

solid, liquid and gas

partials

All matter is made up of…(Not Def)

matter can change state if

the partials gain or lose energy

The forces between solid particles

Vibrate and don’t move

The forces between liquid particles

flow and move a little

The forces between gas particles

move a lot with no bonds

The position of solid particles are

close together

the position of liquid particles

move over each other

The position of gas particles are

very far apart

Heating

particles gain more energy, move more and spread apart

Cooling

Particles lose energy, move less and move closer together

Evenly mixed mixture

homogenous mixture

Not evenly mixed mixture

Heterogeneous mixture

Mixture

2 or more substances, not chemically bonded

Pure

only one substance chemically bonded

solution

solute + solvent

Solute

something being dissolved

solvent

the dissolves the solute

Element

made of 1 type of atom

Compound

2 or more atoms bonded

Insoluble

Not able to be dissolved

soluble

able to be dissolved

concentration

Higher ratio of solute to solvent

Diluted

lower ratio of solute to solvent

Suspension

heterogeneous mixture

solution

Homogenous mixture

Atoms

a single particle

Molecules

describes a particle with two or more atoms joined together