MIXTURES
What is a mixture? Give an example.
A mixture is a combination of two or more substances that do not chemically combine.
What 2 forces are at play when a car rolls down a ramp?
Gravity & Friction
What 2 things does a magnet do?
Attracts and repeals materials
If you were building a boat, what would the most important physical property to consider?
Density, ability to float
What does M.E.L.T.S. stand for
Mechanical, Electrical, Light, Thermal, and Sound energy
What is the difference between a mixture and a solution?
Give an example of each:
A mixture is two substances that can be easily separated. A solution is a mixture that cannot be easily separated.
What tools would you need if you were testing the distance a ball rolls down a ramp?
Ruler, tape measurer, ball, and or timer
What does the S and N mean on a magnet?
North and South (or) Positive and negative
Two objects are dropped into a beaker of water, a rock and plastic straw. Which of the objects is less dense than water?
Plastic straw
What happens when you push a marble into another?
They collide and transfer energy
Oil and Water is a mixture or solution?
Mixture, they can be easily separated.
Explain how you would investigate how a magnet works at a distance using a ruler, paper clip, and magnet.
1) Put the paper clip at one end of the ruler and the magnet at the other end.
2) Slowly move the magnet closer to the paper clip
3) Stop when the paperclip begins to move
4) Record where the magnet begins to attract the paperclip
5) Test your experiment again and record the results
Which of the following will be attracted to a magnet?
1) Gold
2) Wood
3) Plastic
4) Brass
Gold and Brass
Which of the following are insulators:
1) Wood
2) Plastic
3) Aluminum
4) Steel
Wood, Plastic,
Describe the transfer of energy when you use a microwave?
Electrical to thermal, light, mechanical, or sound
List some solutions that are a liquid and a solid.
Tom is conducting an investigation. He rolls balls down 3 different types of ramps. Two of the balls roll about the same distance and the other one roll a shorter distance. What can you conclude about the ramps?
One of the ramps has more friction; or, one of the ramps is lower than the others.
1) S to S
2) S to N
3) N to N
S to N
Classify the following as a conductor or insulator:
1) Plastic
2) Wood
3) Silver
4) Copper
5) Rubber
Conductors: Silver, Copper
Insulators: Plastic, Wood, Rubber
What type of energy transfer occurs with a wind turbine?
Mechanical to electrical
Classify the following mixtures as a Liquid + Liquid Solution or Solid + Liquid solution:
1) Frosted Flakes and Milk
2) Mud
3) Sugar and Water
4) Vinegar and Water
5) Dish soap and Water
1) L+S
2) S+L
3) S+L
4) L+L
5) L+L
If two teams are playing tug-a-war and the rope is not moving, what does this say about the forces.
The forces are balanced.
Which of the following is non magnet:
1) Glass
2) Dirt
3) Steel
4) Aluminum
Glass, Dirt, Aluminum
Three objects are placed inside a beaker. A rock the is 120 grams, 50 grams of dirt, and 62 grams of water. What is the mass of the beaker?
232 g
What transfer of energy occurs when you turn on a light?
Electrical to light/thermal energy