Physical & Chemical changes
Which of the following is a physical change that occurs because of an increase in temperature?
A. Dissolving
B. Boiling
C. Condensation
D. Evaporation
B. Boiling
What type of material WILL allow an electric current to pass through it?
A. Closed
B. Open
C. Insulator
D. Conductor
D. Conductor
Which state of matter is this describing?
(Solid, liquid or gas?)
-Has definite volume
-Has a fixed shape
-Atoms are tightly packed together
Solid
What type of energy is generated when a person rubs their hands together?
A. Chemical
B. Heat
C. Light
D. Kinetic/mechanical
D. Kinetic/mechanical
What type of circuit has an incomplete path that DOES NOT allow electricity to flow through it?
A. Open
B. Closed
C. Insulator
D. Conductor
A. Open
Benny is trying to dissolve sugar into water. What would help him get the sugar to dissolve the FASTEST?
A. Use cold water
B. Use ice cubes in the water
C. Use warmer water
D. Stir the sugar slowly
C. Use warmer water
Which of the following items are insulators?
A. Copper wire & nails
B. Paper clip & metal wire
C. Rubber eraser & a plastic cup
D. Salt water & iron fillings
C. Rubber eraser & a plastic cup
Benny measured the volume of a substance using a graduated cylinder. The substance was most likely....?
A. Air
B. Ice
C. Liquid water
D. Solid metal
C. Liquid water
Which example below DOES NOT indicate a change in motion?
A. A car traveling in a straight line
B. Turning a car to the right
C. A car speeding up to go faster
D. A car coming to a complete stop
A. A car traveling in a straight line
When you charge your phone, you are storing electricity. When you play music or videos on your phone, that stored energy is transformed into what?
A. Heat energy
B. Light energy
C. Kinetic energy
D. Sound energy
D. Sound energy
How would you separate a mixture of saltwater?
A. Stir the mixture quickly
B. Use filter paper and a funnel
C. Heat the saltwater to a boiling point
D. Collect the particles of salt with a magnet
C. Heat the saltwater to a boiling point
In order for an electric current to successfully run, it must be ___________________.
A. Closed
B. Open
C. Wireless
D. Parallel
A. Closed
What property identifies helium as a gas?
A. It is very hot
B. It is colorless
C. It is very light
D. It spreads through the air
D. It spreads through the air
Which example demonstrates the use of chemical energy?
A. A ball landing
B. A burning fire
C. A magnet holding a picture on a fridge
D. A marble sitting still at the bottom of a ramp
B. A burning fire
Benny plugged in his new electric train set. The electric energy is transformed into what?
A. An insulator
B. A conductor
C. Mechanical/kinetic energy
D. State electricity
C. Mechanical/kinetic energy
How would you separate a mixture with sand, water and iron fillings?
A. Stir the mixture quickly
B. Use filter paper, a magnet and a sieve
C. Heat the saltwater to a boiling point
D. Collect the particles of sand with a magnet
B. Use filter paper, a magnet and a sieve
Which of the following items is missing from the material list for building a circuit?
-Metal Wire
-A switch
-A device that uses power (ex: light bulb)
A power source (like a battery)
Benny has 2 cups of water outside and wants to evaporate the water. How could he make the water evaporate faster?
A. Put ice in the water
B. Put the water in the shade
C. Put the water in the sunshine
D. Stir the water while it evaporates
C. Put the water in the sunshine
What type of energy transformation would occur with a ball being pushed down a hill? Potential energy to ...?
A. Heat
B. Kinetic/mechanical
C. Light
D. Sound
B. Kinetic/mechanical
Why is copper wire used by electricians when they create electrical circuits in homes?
A. Copper is a great electrical insulator
B. Copper is very expensive to use
C. Copper is a great electrical conductor
D. Copper is inexpensive to purchase
C. Copper is a great electrical conductor