Chemical Reactions & Conservation of Mass

According to FIGURE 1, how many total atoms make up the molecule glucose?

• 16

• 12

• 18

• 24

Tags

NGSS.MS-PS1-1

The names of many covalent compounds use prefixes.  According to Table 1, how many nitrogen atoms are found in the compound Dinitrogen monoxide?

• 1

• 2

• 3

• 4

What does the absence of a prefix indicate?

• That there are no atoms of a specific element in the compound.

• That there is only one of a specific atom in the compound.

• That there are too many of a specific atom to count in the compound.

Tags

NGSS.MS-PS1-1

In the compound 2CO, what is the 2 called?

• a number

• the coefficient

• a subscript

For an equation to be balanced, all ________ must be counted.

• molecules

• compounds

• atoms

Tags

NGSS.MS-PS1-5

Read the Math Practice:  Counting Atoms.

How many oxygen atoms are there in the compound Mg(OH)2?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

Read the Math Practice:  Counting Atoms.

How many oxygen atoms are there in the compound Al2(SO4)3?

• 4

• 3

• 12

• 16

Tags

NGSS.MS-PS1-1

What is the difference between CO and Co?

• CO is the compound carbon monoxide and Co is the element cobalt.

• CO is the element cobalt and Co is the compound carbon monoxide.

• Co is a colorless, odorless gas where CO is a hard bluish gray metal

Replace the bold underlined word with the word that makes the statement TRUE.

A chemical formula describes a chemical reaction.

• compound

• product

• reaction

• equation

Match the following

• A shorthand way to use chemical symbols and numbers to represent a substance.

• reaction

• A substance or molecule that participates in a chemical reaction.

• chemical formula

• States that mass cannot be created or destroyed in ordinary chemical and physical changes.

• product

• The substance that forms in a chemical reaction.

• Law of Conservation of Mass

• Uses chemical symbols and formulas to describe a chemical reaction.

• chemical equation

Tags

NGSS.MS-PS1-5