_____________ - A combination of substances that do not maintain their physical properties; difficult to separate
_______________________________ - An experiment in which the independent variable is manipulated, the dependent variable is measured, and all other variables are controlled
____________ - A combination of substances that maintain their physical properties; easily separated
Other Answer Choices:
Force
Mixture
Solution
Experimental Investigation
Question 2
2.
Question 3
3.
Question 4
4.
A student built a ramp and tested how far a toy car would travel on wood, carpet, and tile surfaces after rolling down the ramp. The student measured the distance the car traveled after each trial.
Which question is this investigation most likely designed to answer?
Does the height of the ramp affect the distance the car travels after going down a ramp?
Does the type of surface affect the distance the car rolls after going down a ramp?
Does the type of surface affect the speed the car rolls down the ramp?
Does the type of car affect the distance the car travels after going down a ramp?
Sugar is added to a container of warm water. The mixture is stirred and allowed to settle for 3 minutes.
Which property of the sugar will remain the same after it is combined with the water?
Select TWO correct answers
Its sweet taste
Its color
Its grainy texture
Its mass
Its physical state
A student prepared a snack that consisted of grapes, pecans, and strawberries sprinkled with white powdered sugar. The student stored the snack in a refrigerator. An hour later the student observed that the powdered sugar could no longer be seen but the fruit and nuts had not changed in appearance.
What most likely happened to the sugar in the mixture?
The sugar evaporated at the lower temperature in the refrigerator without causing any changes to the fruit
and nuts.
The sugar was more dense than the other foods in the mixture, so it settled to the bottom of the container.
The sugar dissolved in the moisture on the fruit.
The sugar absorbed energy from the nuts and melted into a colorless liquid.