SC.912.P.8.2 Pre-test - Qüestionari

1. What characteristic best describes what happen during a physical change?

A) Form stays the same
B) Mass is lost
C) Composition changes
D) Composition stays the same

2. Which of the following does NOT indicate that a chemical change has occurred?

A) formation of a gas
B) color change
C) formation of a precipitate
D) melting of a solid

3. If the chemical properties of a substance remain unchanged and the appearance or shape of an substance changes what is it called?

A) Both a physical and chemical change
B) Physical change
C) Neither a physical or chemical change
D) Chemical change

4. Which of the following situations represents a chemical change?

A) A blue solution is mixed with a yellow solution and a brown solid is formed.
B) A blue solution is mixed with a yellow solution and a green solution results.
C) A strip of magnesium ribbon is broken into many small pieces.
D) Ice is placed in a beaker and heated until it melts.

5. Which of the following is NOT a physical process?

A) melting ice
B) melting ice
C) sharpening a pencil
D) an explosion of dynamite

6. Alexis is comparing the substances and hot water inside a ceramic cup, and the water vapor above the cup. What can she say about the motion of the particles in all of the substances?

A) They are always moving.
B) They move very fast in all directions.
C) They move past each other slowly.
D) They do not move.

7. To observe a chemical property, you must attempt to change its identity. Which of these statements describes an example of a chemical property?

A) A silver statue begins to tarnish.
B) A metal turns to liquid at a certain temperature.
C) A freshly waxed floor has a bright shine.
D) A painter coats a building with red paint.

8. What type of change occurs when one or more substances are converted into new substances?

A) Physical change
B) Chemical change
C) Chemical fusion
D) Nuclear reaction

9. Luis often leaves his bicycle outside, even when it rains. Luis' bicycle has now begun to rust. How quickly a substance rusts is an example of which of the following?

A) a physical change
B) a chemical property
C) a state of matter
D) a physical property

10. Which change can be easily be reversed?

A) Both a physical and chemical change
B) Chemical Change
C) Physical Change
D) Neither a physical or chemical change

11. Chemical changes result in new substances, but physical changes do not. Which process is an example of a physical change?

A) lettuce rotting in the refrigerator
B) charcoal burning in a grill
C) scrap iron rusting over time
D) metal melting in very high heat

12. Matter is everything around you. All matter has mass and volume. Which of these choices is an example of matter?

A) light
B) magnetism
C) sound
D) air

13. There are several differences between chemical and physical changes. Which process is a sign of a chemical change?

A) A plaster statue breaks when it falls onto the floor.
B) A rotting potato gives off a bad smell.
C) A cloud quickly changes shape when blown by wind.
D) A melting block of ice leaves a large puddle.

14. Which of the following is an example of physical change?

A) Lighting a piece of paper on fire and the paper burns up and leaves ashes.
B) A glass cup falls from the counter and shatters on the ground.
C) Baking a birthday cake for your mother.
D) Mixing baking soda and vinegar together, and this causes bubbles and foam.

Prova creada amb That Quiz — el lloc de proves matemàtiques per a alumnes de tots nivells.