Many electronic devices use batteries as a source of energy. The batteries will eventually wear out. In terms of the Law of

Conservation of Energy, what has occurred? (S8P2)a. The Law of Conservation of Energy is not correct

b. All of the energy has been transformed into other forms of energyc. All of the energy has been converted into mass

d. The Law of Conservation of Energy does not apply in this situation

A metal toy dump truck is left outside. After a few months, the truck has rusted. Rusting is evidence of (S8P1)e. A physical propertyf. A physical change

g. A chemical propertyh. A chemical change

A battery-powered watch with a minute hand and an hour hand tells time because of the transformation of one energy form to

another. Which of the sequences below illustrates this transformation? (S8P2)

a. Chemical – electrical – mechanicalb. Chemical – mechanical – electricalc. Mechanical – chemical –electricald. Electrical – chemical – mechanical

Which family of elements is least reactive? (S8P1)e. The alkali metals in Group 1

f. The transition metal in Group 3g. The noble gases in Group 18

h. The halogen nonmetals in Group 17

Which type of energy is occurring in the above picture? (S8P2)a. Mechanical to electrical energy

b. Mechanical to solar energyc. Electrical to mechanical energyd. Solar energy to electrical energy

Which of the following is the basis for arranging the elements in the modern periodic table?

e. Alphabetical orderf. Masses of atoms

g. Number of protonsh. Date of discovery

Which of the following is designed to convert energy into mechanical work? (S8P2)

a. Flashlightb. Kerosene heater

c. Electric fand. Baking oven

You need to measure the mass of a quantity of sugar for use in an experiment. Which tool would you use?

e. A triple-beam balancef. A teaspoon

g. A rulerh. A spring scale

A chef pours a cup of rice into a pot of boiling water and observes the rice swirling around in the pot. Which of

the following explains the cause of this action?a. Heat transfer by radiation makes rice vibrate

b. The rice is carried along by conductionc. The chef stirred the pot before the rice was added

d. The rice is carried along by convection currents

Which statement refers to a physical property of a substance? (S8P1)

e. Carbon combines with oxygen to form carbon monoxidef. The density of copper is 8.93 g/cm3

g. Acids are corrosiveh. Zinc metal reacts with an acid to produce hydrogen gas

Slide one B/DSlide two A/CSlide three D/CSlide four C/CSlide five D/B