How many sig figs are in this number: 9.09?

• 1

• 2

• 3

• 4

How man sig figs are in this number: 0.03010

• 1

• 2

• 3

• 4

• 7,100

• 7,100,000

• 0.0000071

• 7,100,000,000

• 38

• 0.00000003

• 300,000,000

• 300,000

Which of the following is a chemical property?

• odor
• flammability
• boiling point
• conductivity

Tags

NGSS.HS-PS1-1

What type of properties can be observed or measured without changing the substance's chemical composition?

• Both physical and chemical properties
• Physical properties
• Neither physical nor chemical properties
• Chemical properties

Which of the following is an example of a chemical property?

• Melting point
• Density
• Color
• Ability to react with acid

Tags

NGSS.HS-PS1-1

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

How many significant figures are in 0.0002304

• 2
• 1
• 7
• 4