Chemical Equations

The ARROW symbol in a chemical equation means __.

• equals

• yields

• less than

• great than

In the chemical equation below, what is the PRODUCT?

NaCl → Na + Cl

• Na + Cl

• NaCl

• →

• N

Tags

NGSS.MS-PS1-2

In the chemical equation below, what is the REACTANT?

CO₂ → C + O₂

• →

• C + O₂

• CO₂

• physical change

Tags

NGSS.MS-PS1-1

Fe + O₃ → FeO₃ shows a ___ has occurred.

• chemical change

• physical reaction

• physical change

• no change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

TRUE or FALSE:

A chemical equation is a mathematical equation that shows a chemical reaction.

• TRUE

• FALSE

Tags

NGSS.MS-PS1-5

The side of the chemical equation where two or more elements REACT, is the called the ___.

• reactants

• product

• yields

Tags

NGSS.MS-PS1-5

In a chemical equation, what is PRODUCED or what is on the RIGHT is called the __.

• reactants

• product

• yields

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

TRUE or FALSE:

The YIELD sign always points to the REACTANTS.

• FALSE

• TRUE

Which are the following are evidence of a CHEMICAL REACTION?

• bubbles or producing a gas

• new substance is formed

• burning

• acid is produced

• change in state

Tags

NGSS.MS-PS1-2

C₁₂ + H₂₂ + O₁₁ → C₁₂H₂₂O₁₁

How many Carbon, C, atoms are in the PRODUCT of this equation?

• 12

• 24

• 11

• 22

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5