Matter

Evan and his friends are working on a group project on matter. Michelle says that matter is anything that has mass. Ricky says that matter must have mass and also be touchable. Evan thinks matter must have mass and also be visible. Leon disagrees and says that matter has both mass and takes up space. Who is correct?

• Michelle

• Ricky

• Evan

• Leon

Martina is camping and needs wood for a cooking fire as well as for shelter. She gathers a variety of logs and branches from the surrounding area. She chops and shapes some of the larger pieces of wood into uniform shapes to build her shelter. What kind of change is taking place as the wood is chopped?

• a change in matter

• a change in physical property

• a change in substance

• a change in chemical property

Sierra helps her father install an air purifier in her house. What type of separation method does an air purifier use to remove dust and allergens from the air?

• distillation

• filtration

• evaporation

• magnetic attraction

Select the following that are elements

• NH3

• C

• Cl

• CH

• CN

Select the following that are molecules

• NH3

• CH

• O

• N

• Cl

Apollo 17 astronauts Eugene Cernan and Harrison Schmitt collected the last samples of moon rocks to bring back to Earth in 1972. The astronauts took measurements of the moon rocks using three categories not affected by gravity. This is because the Earth and moon have different forces of gravity. Which measurement did they NOT use?

• mass

• density

• weight

• volume

Mira is testing objects for her science experiment. She has a chart listing the mystery object's densities, but no other information. She needs to calculate which object has a mass of 27 grams. If each object has an identical volume of 3 cm3, which object has a mass of 27 grams?

• A

• B

• C

• D

Mira is testing objects for her science experiment. She has a chart listing the mystery object's densities, but no other information. She places each object in a large bowl of water in order to determine if any float. Which of the objects, if any, will float?

• A

• C

• All objects will float

• No objects will float

Select all of the following that describe volume.

• amount of space that matter occupies

• measured in g/cm3

• measure of mass of a material in a given volume

• measured in cm3

• amount of matter in an object

Jia is cooking her family dinner. One of the ingredients for her main course undergoes a physical change. Which of the following is a physical change?

• cooking eggs

• grilling hamburger

• baking bread

• boiling water