GMAS #6

Which of the following best explains why the end of a spoon sticking out of hot water also gets hot?

• a. The hot water causes a chemical reaction to take place in the spoon.

• b. The heat from the hot water is conducted to the spoon handle.

• c. The water heats the air surrounding the upper part of the spoon.

• d. The hot water causes a physical change in the spoon handle.

How many atoms of reactant are there in the following chemical reaction? SO2 + H2O → H2 + SO3

• a. 2

• b. 4

• c. 6

• d. 12

The Law of Conservation of Mass states that which of the following will always be equal before and after a chemical reaction?

• a. the number of atoms of product and atoms of reactant

• b. the number of molecules of product and reactant

• c. density of reactants

• d. the surface area of the product and the reactant

Which of the following is an example of kinetic energy?

• a. a child jumping rope

• b. a stuffed toy lying on a table

• c. a swimmer ready to dive

• d. firewood stacked in a fireplace

Which of the following is an example of electrical energy being converted to light energy?

• a. ringing a doorbell

• b. striking a match

• c. turning on a computer monitor

• d. water falling over a dam

Light is an example of which type of energy?

• a. nuclear

• b. gravitational

• c. electromagnetic

• d. chemical

Which represents kinetic energy?

• a. a bear standing in a field of berries

• b. a salmon resting in still water

• c. a bear holding a salmon it has caught

• d. a salmon leaping up a waterfall

Marquis is studying an unknown substance. He has recorded several properties in his notebook. Which of these properties is a physical property?

• a. boiling point

• b. flammability

• c. tendency to tarnish

• d. tendency to rust

When a hair dryer is being used, one of the energy transformations that take place is ____.

• electrical to chemical

• electrical to mechanical

• mechanical to electrical

• chemical to electrical

When electrical energy is “used” by an electric light, what really happens to the energy?

• It is given off as other forms of energy

• It changes to matter

• It stops at the electric light

• It disappears