Lesson 2.2 Flashcards
1
Q
Chemical formula
A
a combination of chemical symbols and numbers to represent a substance
2
Q
Chemical equation
A
a representation of a chemical reaction that uses symbols to show the relationship between reactants and products
3
Q
reactant
A
a substance or molecule that participates in a chemical reaction
4
Q
product
A
the substance that forms in a chemical reaction
5
Q
law of conservation of mass
A
law that states that mass can’t be created or destroyed in ordinary chemical and physical changes
