Physical Science Final Review (seniors)

1) Which of the following is true?

• Your mass is less on the moon while your weight stays the same.
• Your weight is less on the moon while your mass stays the same.
• Both your mass and weight are less on the moon than they are on Earth.
• Your mass and weight are the same on the moon as they are on Earth.

2) A hypothesis is a

• conclusion drawn from the results of an experiment
• place where scientists publish their results
• statement that can be tested experimentally
• relationship between two variables

3) Which of the following is a qualitative observation?

• A substance melts at 28 degrees Celsius.
• An object has a mass of 40 kilograms.
• A mixture has a strong smell.
• A car is traveling at 30 miles per hour.

4) 1 kilogram = ______ grams

• 10
• 100
• 1,000
• 1,000,000

5) The smallest unit of an element that retains the properties of that element is a(n)

• atom
• compound
• mixture
• millimeter

6) Which state of matter has a definite volume but no definite shape?

• Solid
• Liquid
• Gas
• Plasma

7) Which of the following is a physical change?

• Iron rusting
• Wood burning
• Bread growing mold
• Water freezing

8) Which state of matter has the least energy?

• Solid
• Liquid
• Gas
• Plasma

9) A student makes several measurements to determine the density of a liquid. The measurements vary widely, but the average of the results is close to the true value. Her results are _____

• accurate, but not precise
• precise, but not accurate
• neither precise nor accurate
• both accurate and precise

10) Two or more elements that are chemically bonded form a(n)

• element
• compound
• heterogeneous mixture
• homogeneous mixture