Describing Chemical Reactions

at the end of the reaction , the new substances are called the

• catalysts

• reactants

• products

• ingredients

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

the substances at the beginning of a chemical reaction

• reactants

• inhibitors

• catalysts

• products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

during a chemical reaction, matter is not created or destroyed. this is called

• The law of conservation of weight

• The law of conservation of mass

• The law of conservation of volume

• The law of conservation of energy

Tags

NGSS.MS-PS1-5

number placed in front of a chemical formula in an equation

• subscript

• exponent

• radical

• coefficient

two or more elements or compounds combine to make a more complex substance

• evaporation

• decomposition

• sublimation

• synthesis

Tags

NGSS.MS-PS1-5

occurs when compounds break down into simpler products

• Combination

• Evaporation

• Oxidation

• Decomposition

if two elements in different compounds trade places

• replacement

• single displacement reaction

• combustion reaction

• decomposition reaction

The substances you have at the beginning of a chemical equation are called __________.

A chemical equation describes a ________.

• reaction

• product

• formula

• compound

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Chemical equations use chemical formulas and other symbols instead of words to summarize a reaction.

• true

• false

Tags

NGSS.MS-PS1-1