Types of Reactions 7b

Which of these is NOT a sign that a chemical change has occurred?

• Dissolved completely in water

• An unexpected change in odor

• A temperature change

• The formation of a precipitate

Tags

NGSS.MS-PS1-2

Which of the following IS a physical change?

• Getting a haircut

• Rusty metal

• Sour milk

• Battery power

Identify the reaction

Fe(SO₄)₃ + KOH ---> K₂(SO₄) + Fe(OH)₃

• double replacement

• decomposition

• combination

• single replacement

Identify the reaction

HgO₂ ---> H + O₂

• double replacement

• decomposition

• combination

• single replacement

Which of the following is a chemical change?

• water freezes to form ice
• sugar dissolves in water
• gasoline burns in a car engine
• a piece of metal expands when it is heated

Tags

NGSS.MS-PS1-2

What type of change occurs when a new substance is formed that has different properties from the original substances?

• chemical change

• nuclear change

• physical change

• seasonal change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The substances on the right side of a chemical equation called...

• yields

• output

• products

• reactants

Tags

NGSS.HS-PS1-7

What are substances on the left side of a chemical equation called?

• quantities

• ingredients

• products

• reactants

Determine the missing coefficient to balance this equation.

C₃H₈ + 5O₂ ---> 3CO₂ + ___H₂O

• 1

• 8

• 2

• 4

Tags

NGSS.HS-PS1-7

Identify the reaction shown

Rb₃ + P ---> Rb₃P

• double replacement

• decomposition

• combination

• single replacement