TSA Science 7 - Randolph - Balancing Chemical Equations

The _________________ are new substances that are created following a chemical reaction.

• reactants

• products

• coefficients

• subscripts

The _________________ are either elements or compounds which are present prior to a chemical reaction.

• reactants

• products

• coefficients

• subscripts

Tags

NGSS.MS-PS1-5

The arrow in a chemical equation represents the _______________.

• chemical change

• products

• coefficients

• subscripts

The large number before a molecule is called a _______________.

• reactant

• product

• coefficient

• subscript

The subscript represents the number of ____________ in a chemical formula.

• reactants

• products

• atoms

• molecules

How many molecules of  $CO_2$ are present in the following chemical equation?   $6CO_2\ +\ 6H_2O\ \ \rightarrow\ \ C_6H_{12}O_6\ +\ 6O_2$  

• 18

• 4

• 24

• 6

Tags

NGSS.MS-PS1-5

How many atoms of oxygen are present in the reactants of the following chemical equation?   $6CO_2\ +\ 6H_2O\ \ \rightarrow\ \ C_6H_{12}O_6\ +\ 6O_2$  

• 18

• 4

• 24

• 6

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many atoms of carbon are present in the products of the following chemical equation?   $6CO_2\ +\ 6H_2O\ \ \rightarrow\ \ C_6H_{12}O_6\ +\ 6O_2$  

• 18

• 4

• 24

• 6

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many total atoms are present in the following chemical formula?   $C_6H_{12}O_6$  

• 18

• 4

• 24

• 6

Tags

NGSS.MS-PS1-1

Is the following equation balanced or unbalanced?   $6CO_2\ +\ 6H_2O\ \ \rightarrow\ \ C_6H_{12}O_6\ +\ 6O_2$  

• balanced

• unbalanced

Tags

NGSS.MS-PS1-5