5.4

When two or more elements combine chemically to form a new substance, it is called a-

• mixture

• compound

• model

• element

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which state of matter has a definite shape and a definite volume? 

• Solid

• Liquid

• Gas

Which of the diagrams best shows the arrangement of molecules in a solid? 

• A

• B

• C

• D

Gallium is a metal that melts at about 30°C. If a person, whose body temperature is 37°C, held a cube of gallium for five minutes, what will most likely happen to the gallium?

• It will change to a gas.

• It will change to a liquid.

• It will become a solution.

• It will become a mixture.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Conduct experiment

Ask a question

Analyze results

Communicate results

Draw conclusions

Tags

NGSS.MS-LS1-5

A student makes a fruit drink by stirring a powdered mix into cold water. Why is the fruit drink a solution?

• The powder dissolves in the water.

• The water changes color

• The student stirs the water.

• The water is the proper temperature.

Tags

NGSS.MS-PS1-2

Atoms join with other atoms to form:

• solutions

• elements

• molecules

• mixtures

Tags

NGSS.MS-PS1-1

What will happen if the lid is removed from a container that holds helium gas?

• The gas will expand and escape from the container. 

• The gas will slowly change back into a liquid.

• When light hits the gas, it will change colors.

• Gravity will keep the gas in the container.

Tags

NGSS.MS-PS2-2

When ice cream is left out of a freezer, the ice cream changes from a —

• solid to a gas

• gas to a liquid

• solid to a liquid

• liquid to a gas

Tags

NGSS.MS-PS1-4

The smallest part of matter that is identifiable as an element is the —

• atom 

• molecule

• cell

• compound