Science MP1 4wk 25-26 Review

As temperatures increase, which of the following happens? (select 2)

• The particles in an object have more kinetic energy.

• The particles in an object have less kinetic energy.

• The particles in an object slow down.

• The particles in an object speed up.

Tags

NGSS.MS-PS1-4

A scientist obtains a microscopic view of a certain substance. She finds evidence of the molecules in a regular pattern that is rigid, the particles cannot slide past one another. She must be observing which state of matter?

• solid

• liquid

• gas

• plasma

Which of the following diagrams shows molecules in both the liquid phase and in the gas phase?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

Which of the following best describes what happens when most substances change from a solid state to a liquid state?

• The molecules move farther apart.

• The molecules get smaller.

• The molecules lose energy.

Tags

NGSS.MS-PS1-4

Students are comparing the densities of different liquids. What safety equipment should the students use in this investigation?

• aprons and safety goggles

• first aid kit and aprons

• safety goggles and helmet

• gloves and first aid kit

Which picture shows the BEST way to store test tubes during an experiment?

• 
• 
• 
• 

A student wants to observe plant cells. Which instrument should the student use?

• Telescope

• Microscope

• Magnifying glass

• Binoculars

A(n) _________ is a physical combination of two or more different substances.

• element

• molecule

• compound

• mixture

Students are comparing two mixtures. The first mixture is of sand and water, while the second mixture is of sugar and water.

Which of the mixtures is also a solution?

• Neither mixture is a solution.

• The sand and water mixture is a solution.

• The sugar and water mixture is a solution.

• Both mixtures are solutions.

Tags

NGSS.MS-PS1-2

Beach sand is made of small, worn rocks and fragments of shells and sponges. This means that beach sand is —

• a solid

• a mixture

• a compound

• unstable