Matter
Matter makes up everything. What is matter made out of?
Atoms
What type of change occurs when ice melts into liquid water?
physical change
What is the formula for average speed?
distance divided by time
What is the ability to cause change or do work called?
Energy
What is a push or pull called?
A force
What are the four states of matter?
Solid, liquid, gas, and plasma
What type of change occurs when wood burns and turns into ash?
chemical change
What force pulls objects toward Earth?
Gravity
What is the transfer of energy caused by a difference in temperature called?
Heat
What happens when a gas changes into a liquid?
Condensation
What state of matter has a fixed volume but takes the shape of its container?
Liquid
What type of change occurs when iron rusts?
chemical change
A student walks 100 feet in 2 minutes. What is their average speed?
50 feet per minute
What type of energy does a moving object have?
Kinetic Energy
What is the amount of matter in an object called?
Mass
A puddle disappears on a warm day. What change of state is happening?
Evaporation
Explain the main difference between a physical change and a chemical change.
A physical change does not create a new substance. Easily reversible.
A chemical change creates one or more new substances. Not easily reversible.
Which of Newton’s laws says an object at rest stays at rest unless a force acts on it?
Newton’s First Law
A ball sits at the top of a hill. What kind of energy does the ball have due to it's position.
Potential Energy
How do particles behave in a solid?
The particles in a solid are packed closely together and vibrate in place.
Fixed shape and volume.
What is sublimation?
A solid changing directly into a gas.
Bubbles form when two substances mix and react. What might this indicate?
A chemical change may have occurred
Which of Newton’s laws explains that an object's acceleration depends on its mass and the force applied?
Newton’s Second Law
What is the flow of electrons through a metal wire called?
Electricity
A student travels 80 meters in 10 seconds. What is the student’s average speed?
8 meters per second