Physical and Chemical Equations

Flammability, toxicity, and oxidation are examples of

• chemical properties

• physical properties

• random properties

• phases of matter

Changes that do not form a new substance and are reversible are

• phases

• physical changes

• chemical changes

The formation of the compound molecule salt (NaCl) is a

• physical change

• chemical change

• change in state of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT a clue that a chemical change has happened

• Color changes

• Production of heat

• Production of light

• The object's shape changes

Tags

NGSS.MS-PS1-2

How many total Oxygen atoms are there on the reactant side of this equation?

• 8

• 4

• 3

• 2

What are the small numbers that tell how many of each type of atom are in the equation?

• coefficient

• integer

• subscript

Tags

NGSS.MS-PS1-1

What are the big numbers that come in front of a formula that tell how many molecules participate in the reaction?

• integer

• coefficient

• subscript

• exponent

When 2 solutions combine to create a solid this is:

• change in state of matter

• a precipitate

• sublimation

• melting

Tags

NGSS.MS-PS1-2

What are the starting substances in a reaction called?

• products

• reactants

• subscripts

• coefficients

The arrow in a chemical equation can be translated as:

• less than

• greater than

• yields

• divided by