Mixtures
What do all mixtures have in common?
A) They are a combination of substances that give off a gas.
B) They are any type of matter that can change its shape or color.
C) They are any type of matter that evaporates when heat is added.
D) They are a combination of two or more substances that keep their identities.
D) They are a combination of two or more substances that keep their identities.
How can you tell if an object is a gas?
A gas has no definite shape or volume
What is friction?
A. The path that electricity travels through
B. push or pull that causes motion
c. caused by rubbing surfaces: slows down motion
d. when one object gives it energy to another
c. caused by rubbing surfaces: slows down motion
Draw a closed circuit
What are good conductors of electricity?
Materials like copper and silver.
How can you measure a mixture up close? Which tool would you use?
A. Magnifying Glass
B. Digital Scale
c. Horseshoe Magnet
D. Thermometer
A. Magnifying Glass
What are the three states of matter?
Solid, liquid, and gas.
What is force?
Answers may vary:
push or pull that causes motion
Draw an open circuit.
students should draw an open circuit on a whiteboard or piece of paper
Which materials are poor conductors of electricity?
Answers may vary:
Plastic and rubber are poor conductors.
What happens to the black metal after being exposed to water and oxygen?
Rust forms on the metal
What happens to water at 100°C?
Water boils and turns into vapor (gas).
Answers may vary:
The object transfers its energy to the other object, causing it to move
What does flipping the switch do to the circuit?
It closes the circuit, allowing electrical energy to flow.
What is an example of an insulator?
What is the conservation of mass?
A. Push or pull that causes motion
B. Allows electricity to flow easily
c. When matter changes form but the total amount stays the same
d. formed when iron reacts with water and oxygen
c. When matter changes form but the total amount stays the same
Which temperature would be considered a Gas?
A. 25 degrees Celsius
b. -2 degrees Celsius
c. 105 degrees Celsius
d. 40 degrees Celsius
C. 105 degrees Celcius
What is the effect of different surfaces on motion? Compare a rough surface to a smooth surface
Rough surfaces slow down movement compared to smooth surfaces.
How does electricity flow through a circuit?
Electricity flows in a complete loop from the power source to the load.
Differentiate between materials based on conductivity.
Good conductors allow electricity to flow easily, while poor conductors do not.
What is an example of a mixture?
Answers may vary...teacher discretion
Which temperature would be considered a Solid
A. 25 degrees Celsius
b. -2 degrees Celsius
c. 105 degrees Celsius
d. 40 degrees Celsius
b. -2 degrees Celsius
Do collisions transfer energy? Explain your answer with the marble experiment we did in class.
Yes, the marble collided with the still marbles, causing the energy to transfer, which caused the still marbles to move.
What is the difference between an open circuit and a closed circuit?
an open circuit stops the flow of energy, while a closed circuit allows the energy to flow.
Are rubber plugs insulators or conductors?
Insulators