Properties of Matter
A student compares the physical properties of a plastic cup, a rock, and an eraser. Which of these physical properties do the objects have in common?
They are in the same physical state.
Which mixture could be separated with a strainer?
Pebbles and water
What happens to the position of a golf ball when a golfer applies an unequal force to the ball?
An unequal force will cause the golf ball to move or change its position. It will move in the direction of the force.
Headphones transform electrical energy into _______ energy.
sound
When electrical energy flows in a circuit, it can transform into other forms of energy. What forms of energy that can be produced in a complete electric circuit?
thermal, sound, mechanical and light
A student tested materials to see if they conduct electrical or thermal energy. Which material would be the most likely to conduct electrical or thermal energy?
A copper penny
A student prepared a snack of raspberries, blueberries, almonds, and powdered sugar. They stored the snack in the refrigerator for an hour. When they came back, the powdered sugar could no longer be seen, but the fruit and nuts did not change their appearance.
What most likely happened to the powdered sugar?
The sugar dissolved because of the moisture in the fruit.
A tennis player just hit the ball with their racquet. Select the two statements that are true.
The player applied unequal force, which caused a change in the pattern of motion.
The player applied unequal force, which caused a transfer of energy.
Which type of energy is measured with a thermometer?
thermal
What is the pathway through which electricity flows?
circuit
Which material is most likely to be attracted to a magnet?
iron
Describe the change that occurs when lime juice is mixed with water.
The lime juice dissolves in the water.
When a student kicks a soccer ball, they transfer ________ to make the ball move.
Energy
Which example does not produce sound and light energy?
trombone
What is the pathway that allows an electric current to flow freely?
complete circuit
A beaker with 100 mL of water has a temperature of 22°C. A student adds 10 g of salt and two ice cubes to the beaker. Which physical properties changed as the new materials were added?
The temperature, mass, and volume
Which statement best describes the conservation of matter?
Matter is not created or destroyed.
What is force?
A force is any push or pull that acts on an object.
Describe the energy transformation that happens when using a blender.
Electrical energy transforms into mechanical energy and sound.
Why is a conductor needed for a complete circuit?
A conductor allows the energy to flow. The wires in a circuit conduct the electricity through the circuit.
Describe thermal and electrical energy, and explain how a conductor and an insulator affect the flow of thermal and electrical energy.
Thermal energy is heat. Electrical energy flows through wires. A conductor allows thermal or electrical energy to flow through easily. An insulator does not allow thermal or electrical energy to flow.
How does the mass of each material in a solution compare with the total mass of a solution?
The mass of each material combined is equal to the mass of the solution. Matter is conserved when combined.
For an object to remain at rest, which of the following must be true?
The forces acting on it are equal.
Describe the energy transformation that occurs in a solar panel.
Light transforms into electrical energy.
A circuit must be __in order for energy to flow through it.
complete or closed