Intro to Chemistry Unit Review

Which state of matter has an indefinite shape and definite volume?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told him that he should try using Clean - O detergent, a new laundry soap she found at Sail - Mart. SpongeBob made sure to wash one pair of pants in plain water and another pair in water with the Clean - O detergent. After washing both pairs of pants a total of three times, the pants washed in the Clean - O detergent did not appear to be any cleaner than the pants washed in plain water. What is the dependent variable in SpongeBob's experiment?

• number of times washed

• type of pants

• detergent used

• how clean the pants were

Tags

NGSS.MS-PS1-2

Which of the following is a compound?

• sugar cookie

• motor oil

• oxygen

• water

Tags

NGSS.MS-PS1-1

Which of the following is an example of a chemical change?

• burning a piece of wood

• tearing up a piece of paper

• inflating a tire

• breaking a pencil

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are the horizontal rows on the periodic table called?

• groups

• periods

• elements

• mixtures

Taking a nap in the afternoon makes people more focused for the rest of the day. What is the independent variable?

• time in the afternoon

• focus for the rest of the day

• taking an afternoon nap

• what was eaten for lunch

Which of the following is an example of a physical change?

• cooking pancakes

• silver tarnishes

• cutting grass

• wood rots

Which of the following is an example of a heterogeneous mixture?

• motor oil

• sodium

• italian dressing

• blue ink

What is another word for precipitate?

• rain

• liquid

• gas

• solid

Tags

NGSS.MS-PS1-1

Which state of matter has a definite shape and volume?

• solid

• liquid

• gas

• plasma