Parts of an Equation and review

1. HI + KOH → KCl + H₂O

What are the reactants?

• KI and KOH

• KCl and H₂O

• HI and KCl

• KOH and H₂O

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

1. C₃H₈ → C₃H₄ + 2H₂

What are the products?

• C₃H₈

• C₃H₄ and 2H₂

• C₃H₈ and 2H₂

• C₃H₄

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which equation matches the reaction description:

Hydrogen iodide reacts with potassium hydroxide to form potassium chloride and water.

• HI + H₂O → KCl + KOH

• KCl + H₂O → HI + KOH

• HI + KOH → KCl + H₂O

• HI + KCl →  KOH + H₂O

Tags

NGSS.MS-PS1-5

1. HI + KOH → KCl + H₂O

What are the products

• HI and KOH

• KOH and H₂O

• KCl and H₂O

• HI and KCl

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O

Which formula has subscripts only?

• C₂H₅OH

• 3O₂

• 2CO₂

• 3H₂O

Tags

NGSS.MS-PS1-1

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Which formula has a coefficient of 3?

• C₃H₈

• 5O₂

• 3CO₂

• 4H₂O

Tags

NGSS.MS-PS1-1

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Which are formulas for compounds?

• C₃H₈

• 5O₂

• 3CO₂

• 4H₂O

Tags

NGSS.MS-PS1-1

4NH₃ + 3O₂ → 2N₂ + 6H₂O

Which are formulas of elements?

• 4NH₃

• 3O₂

• 2N₂

• 6H₂O

Tags

NGSS.MS-PS1-1

Which of the 5 evidences for chemical reactions are seen in this picture?

• Change in color/light.

• Change in temperature.

• Formation of a precipitate (solid).

• Change in odor.

• Production of a gas.

Tags

NGSS.MS-PS1-2

Which of the 5 evidences for chemical reactions are seen in this picture?

• Change in color/light.

• Change in temperature.

• Formation of a precipitate (solid).

• Change in odor.

• Production of a gas.

Tags

NGSS.MS-PS1-2