Question

the properties of matter multiple choice write the letter of the correct answer in the space provided. 1. which property of matter is a measure of the gravitational force? a. density b. mass c. volume d. weight 2. in a graduated cylinder containing several liquid layers, the least dense liquid is found a. floating at the top. c. in the lightest colored layer. b. in the middle layer. d. settled on the bottom. 3. how does a physical change differ from a chemical change? a. new volumes are created in a physical change. b. new materials are produced in a physical change. c. the composition is unchanged in a physical change. d. the change is reversible in a physical change. 4. melting crayons is an example of a a. physical property. b. physical change. c. chemical property. d. chemical change. 5. which of the following units would be best for describing the volume of mercury (liquid) used in an experiment? a. grams or kilograms c. liters or milliliters b. meters or centimeters d. newtons 6. which of the following events is not a common sign that a chemical change has taken place? a. change in color or odor b. change in state c. foaming or bubbling d. production of heat or light

Explanation:

Question 1

Density is mass per unit volume, mass is the amount of matter, volume is space occupied. Weight is the gravitational force on an object, so it measures gravitational force.

In a graduated cylinder with liquid layers, less dense liquids float on more dense ones. So the least dense liquid is at the top.

Physical change doesn't form new substances, so composition remains same. Chemical change forms new substances. Option a is wrong (volume change not creation), b is wrong (physical change no new materials), d: not all physical changes are reversible. So c is correct.

Answer:

d. weight

Question 2