CONSERVATION OF MASS
THE LAB
MATTER
100

what side is the reactants on

left

100

when handling hydrogyen peroxide do you have to wear safety materials 

yes, you should be wearing gloves and goggles

100

whats an element

a pure substance made of only 1 type of atom

200

whats a coefficient

the number in front of a element that tells you the units needed for or produced from a reaction (EX: 4F)

200

what happend after the chemical reaction

foam shot up and over the beaker 

200

whats a compund

when 2 or more elements chemically combine

300

whats a subscript 

the little number under-ish a element that tells the number of atoms in a unit

300

did the mass change after the chemical reaction 

no

300

whats a molecue 

the smallest unit of a compond

400

whats the law of conservation of mass

matter cant be created or destroyed during chemical reactions

400

what happend before the chemical reaction 

we poured the yeast and water mix in the graduated cylinder 

400

which of the following best descibe a hetro mixture

A.vingiger and water mixture

B.steel alloy

C.ceral milk and berries

D.filtered tap water

C