Iqwest Introduction to Chemistry Properties

A scientist has two containers. Inside each container is a blue liquid. The liquids are substances. What can the scientist do to help find out whether these two liquids are both the same substance?

(Scientific Principal #1)

• Measure the density of the two liquids and compare the densities.

• Weigh each liquid and compare the weights.

• Measure the volume of each liquid and compare the volumes.

• Measure the temperature of each liquid and compare the temperatures.

Tags

NGSS.MS-PS1-2

Which one of the following is a substance?

(Scientific Principle #2)

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• 
• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Which one of the following cereals is NOT a mixture?

(Scientific Principle #3)

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• 
• 
• 

Soda contains a large amount of sugar. Why can't it be seen in the liquid?

(Scientific Principle #4)

• The sugar has a chemical reaction with the soda.

• The sugar dissolves in the soda.

• The sugar is taken out of the soda.

• The sugar was invisible before it was added to the soda.

Tags

NGSS.MS-PS1-2

You find a clear gem that is made of one substance. What could you do to identify whether the gem is a diamond?

(Scientific Principle #5)

• Measure its length and compare it to the length of other gems, including diamonds.

• Determine its shape and compare it to the shape of other gems, including diamonds.

• Determine its melting point and compare it to the melting point of other gems, including diamonds.

• Measure its mass and compare it to the mass of other gems, including diamonds.

Tags

NGSS.MS-PS1-1

Which one of the following characteristics will not help you tell whether two solids are the same or different substances?

(Scientific Principle #6)

• Color

• Hardness

• Shape

• Melting Point

Which is the least dense material?

(Scientific Principle #7)

• grape

• syrup

• oil

• cork

Which one of the following is a chemical reaction?

(Scientific Principle #8)

• New atoms are formed when substances are mixed together

• A solid material melts and becomes a liquid

• Atoms of the reactants rearrange to form a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which one change will produce a new substance?

(Scientific Principle #9)

• dissolving cocoa mix in water

• burning a piece of bread in a toaster

• heating water until it evaporates

• cooling water until if freezes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

aluminum + copper chloride ---> copper + aluminum chloride

Name the reactant(s) in the reaction.

(Scientific Principle #11)

• Copper

• copper chloride

• Aluminum + copper chloride

• copper + aluminum chloride