Mixtures
What is a mixture?
Answer: A mixture is a combination of two or more substances that do not chemically combine.
What forces are at play when a car rolls down a ramp?
Answer: Gravity pulls the car down, and friction slows it down.
Describe how magnets attract and repel.
Answer: Magnets attract when opposite poles (north and south) are near each other and repel when like poles (north and north or south and south) are near each other.
What are the physical properties of matter?
Answer: Physical properties include color, shape, size, mass, volume, and density
What are the types of energy and some examples of each type?
Answer: Types of energy include kinetic (moving objects), potential (stored energy), thermal (heat), and electrical (electric current).
What are the properties of a mixture? Describe what happens
The properties of a mixture include that the substances retain their own properties and can be separated by physical means.
What tools would you need if you were testing the distance a ball rolls down a ramp?
Answer: A ruler or measuring tape and a ball.
Which ends of the magnets are attracted to each other?
Answer: The north end of one magnet is attracted to the south end of another magnet.
What are examples of conductors?
Answer: Metals like copper and aluminum are good conductors of electricity.
Explain how energy can change forms.
Answer: Energy can change forms, such as potential energy turning into kinetic energy when an object moves.
List some solutions that are a liquid and a liquid.
Answer: Examples include saltwater and vinegar mixed with water.
Explain how you would investigate how a magnet works at a distance.
Answer: You could move a magnet closer or farther away from metal objects to see if they are attracted.
Which ends of the magnet are repelled from each other?
Answer: The north end of one magnet is repelled by the north end of another magnet.
What are examples of insulators?
Answer: Rubber and plastic are examples of insulators that do not conduct electricity well.
What is an example of sound energy?
Answer: Sound energy is produced when a guitar string vibrates.
List some solutions that are a liquid and a liquid and a solid and a liquid.
Answer: Examples include lemonade (liquid + solid sugar) and a smoothie (liquid + solid fruit).
What physical properties would be necessary for a boat?
Answer: The boat should have buoyancy, stability, and a shape that reduces water resistance.
Give an example of a situation where magnets are used in everyday life.
Answer: Magnets are used in refrigerator doors to keep them closed.
What is mass?
Answer: Mass is the amount of matter in an object, usually measured in grams.
How does energy relate to motion?
Answer: Energy is required to move an object, and the motion of objects can also produce energy.
If you had a pan balance with a car on one pan and weights on the other, what would the mass of the car be if the weights were 10g, 20g?
Answer: The mass of the car would be 30g.
How would you calculate the mass if you added two substances together?
Answer: Add the masses of the two substances together (e.g., mass A + mass B).
Describe a simple experiment to demonstrate magnetism.
Answer: Use a magnet to pick up paper clips and observe how many it can hold, showing the strength of the magnet.
What tool is used to measure mass?
Answer: A balance scale or digital scale is used to measure mass.
Describe how energy is transferred from one object to another.
Answer: Energy can be transferred through contact (like pushing) or at a distance (like magnetic or gravitational forces).