Unit 1 Reviewer

This equation describes the chemical reaction that occurs during photosynthesis.

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

How many total atoms does C₆H₁₂O₆ contain?

• 2

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

This equation describes the chemical reaction that occurs during photosynthesis.

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

How many elements does C₆H₁₂O₆ contain?

• A. 3

• B. 6

• C. 12

• D. 24

Tags

NGSS.MS-PS1-1

A student wrote the equation below: Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂ How many elements are reacting together?

• 2

• 3

• 4

• 6

In the equation above, what is the subscript of O₂?

• 0

• 1

• 2

• 4

Tags

NGSS.MS-PS1-1

In the chemical equation above, the __________ combine together to yield the __________ .

• reactants, products

• products, reactants

• elements, compounds

• compounds, elements

Tags

NGSS.MS-PS1-5

How many atoms, in total, are in the chemical formula below? Co(NO₃)₂ Enter the correct answer in the box. There are ______ atoms in total.

• 7

• 8

• 9

• 10

Tags

NGSS.MS-PS1-1

A chemical formula is displayed below: (NH₄)₃PO₄ How many atoms, in total, are in this chemical formula?

• 20

• 16

• 18

• 14

Tags

NGSS.MS-PS1-1

Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂ How many copper (Cu) atoms are there in Cu(NO₃)₂?

• 1

• 2

• 5

• 6

Tags

NGSS.MS-PS1-1

The chemical formula for sodium carbonate, also known as washing soda, is Na₂CO₃. Which of the following statements are true concerning sodium carbonate's chemical formula?

• There are 5 total atoms in the chemical formula for sodium carbonate.

• There are 3 carbon (C) atoms and 2 sodium (Na) atoms in the chemical formula for sodium carbonate.

• There are twice as many sodium (Na) atoms as there are carbon (C) atoms in the chemical formula for sodium carbonate.

• There are 6 total atoms in the chemical formula for sodium carbonate.

• There are more carbon (C) atoms than there are sodium (Na) atoms in the chemical formula for sodium carbonate.

Tags

NGSS.MS-PS1-1

Which of the following statements accurately describe the chemical formula listed below? HClO₃

Select TWO correct answers.

• A. There are 3 elements in the formula.

• B. There are 4 elements in the formula.

• C. There are 6 total atoms in the formula.

• D. There are 3 total atoms in the formula.

• E. There are 5 total atoms in the formula.

Tags

NGSS.MS-PS1-1