chemistry

Página 1

what is chemistry?

study of matter and the changes it undergoes

what is matter?

anything that has mass and takes up space

definition of mass:

the amount of matter in an object. It is measured with a scale in grams

definition of volume:

the amount of space something occupies

units for each:

mass- grams

volume- cm3 or mL

weight- N

density- gm/cm3 or mL

formulas:

weight- mass x gravity

density- mass/volume

what is the law of conservation of mass?

mass cannot be created nor destroyed

name all of the lab equip that holds liquid

beaker

graduated cylinder

test tube

dropper

how to find the volume

liquid- pour it into a graduated cylinder

solid block- measuring stick

irregular shaped object- water displacement method