2425 Ortego Semester 1 Review

Matter is anything that.....

• Has mass and takes up space

• Has mass and is visible

• Takes up space and has energy

• Has energy and is visible

What particle view below is a mixture?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Is this a pure substance?

• Yes

• No

Tags

NGSS.MS-PS1-1

What is the best classification of this substance?

• An element

• A compound

• A mixture of 2 elements

• A mixture of 2 compounds

Tags

NGSS.MS-PS1-1

What is an example of a physical property?

• Silver is shiny

• Alcohols are flammable

• Alkali metals are reactive with water

• Acids are sometimes corrosive

Is this image showing a homogeneous or a heterogeneous mixture? Image: Cesar salad

• homogeneous

• heterogeneous

Does this image represent a chemical or a physical change?

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the scientific notation for the number 4500?

• 450 x 10^1

• 0.45 x 10^4

• 45 x 10^2

• 4.5 x 10^3

Convert the number 0.00078 to scientific notation.

• 7.8 x 10^-4

• 78 x 10^-5

• 0.78 x 10^-3

• 7.8 x 10^-3

Which of the following numbers has four significant figures?

• 0.004500

• 450.0

• 4500

• 0.0450