Science unit 6 quiz

Biochemical reactions

when one molecule becomes a different one inside a cell.

catabolic reactions

break down big molecules into smaller ones

anabolic reactions

build up large molecules from smaller ones

The law of conservation of mass

matter cannot be created or destroyed, even if matter goes through a physical reaction or chemical reaction. the total mass of matter stays the same, and the total number of atoms stays the same

The law of conservation of mass

chemical reactions have two parts, written like an equation.

reactant

molecules that start a reaction

products

molecules that are created

the arrow

shows the direction

types of chemical reactions

decompositon, synthesis, single replacement, double replacement, neutralization, precipitation, combustion

coefficient

total number of that compound/molecule

subscript

number of atoms of the element in the molecule