Mastery Lesson 8.5D and 8.5E

Physical and Chemical Changes Lesson

Open Ended

Give TWO examples of a physical change. DO NOT USE MY EXAMPLES!

Fill in the Blank

A physical change does ______ make something new

Multiple Choice

Which of the following is NOT an example of a physical change?

• crumpling paper

• sharpening a pencil

• clothes shrinking

• sour milk

Multiple Choice

Burning wood is a

• chemical change

• physical change

Multiple Choice

glass breaking

• physical change
• chemical change

Multiple Choice

melting ice cream

• physical change
• chemical change

Multiple Choice

Which of the following is NOT an example of chemical change?

• making pancakes

• sugar dissolving into water

• baking a cake

• rotting an apple

Multiple Select

Check all that apply: What may change in a chemical change?

• Shape

• Color

• Size

• Temperature

Multiple Choice

Physical or Chemical Change?

• Physical Change

• Chemical Change

Coefficient vs Subscript

• Coefficient: Numbers in front of a formula which gives the total number of compounds.

• Subscripts: The small number to the bottom right of an element, which tells the number of atoms of the element immediately before it.

Multiple Choice

What is the Coefficient?

• 4

• 3

• 1

• 0

Multiple Choice

What is the subscript of Nitrogen?

• 4

• 3

• 1

• 0

Fill in the Blank

How many elements are there: K₂HPO₄

Multiple Choice

How many atoms are there: C₆H₁₂O₆

• 3

• 6

• 12

• 24

Multiple Choice

How many atoms are there: N₂O

• 2

• 3

• 4

Multiple Choice

In the equation for photosynthesis, how many Hydrogen atoms are in glucose?

• 2

• 6

• 12

Multiple Choice

In the equation for photosynthesis, what is the coefficient for water?

• 1

• 2

• 6

• 12

Multiple Choice

Determine the number of Hydrogen (H) atoms are in the following chemical formula: 3H₂O

• 4

• 3

• 2

• 6

Multiple Choice

Determine the number of Lithium (Li) atoms are in the following chemical formula: Li₂SO₄

• 1

• 2

• 4