What Matters
What is made up of matter?
Everything
What is buoyancy
An upward forced created by a fluid that opposes the weight of an object
What is a physical change?
When a matter changes its appearance. It is reversible because a new substance is not formed.
What is it called when a liquid is turned into a solid?
Freezing
What is the water cycle?
The movement of water between the Earth's surface and the air.
In order for something to be matter, it has to have what two things?
Mass and volume
If an object is less dense than the liquid you put it in, will it sink or float?
Float
What is a chemical change?
When one or more substances are made and the change cannot be easily undone.
What is it called when a liquid is turned into a gas?
Which state of matter takes the shape of its container?
Liquid
What are the tiny particles call that make up matter
Atoms
What does it mean if something is neutrally bouyant?
The object does not sink or float.
What are two ways we could tell that a chemical change has happened?
Colour change, new smell, gas bubbles, making a solid
100 degrees Celsius
What are the stages of the water cycle?
Evaporation, condensation, precipitation, collection.
What experiment did we do to test viscosity?
Placing a penny or a candy in different liquids to see how fast they sink.
Why do hot air balloons float?
The hot air inside the balloon is less dense than the air outside the balloon.
Are changes in state (from a solid to a liquid to a gas) a physical or chemical change?
Physical
Why is it important to know the freezing point if you are using windshield washer fluid?
Answers vary
What is collection?
The water that collects in oceans, rivers, lakes, and streams.
What is the name of the system that uses liquids to generate forces through compression?
Hydraulic
What is compressed gas?
A gas that has had its pressure increased by being squished.
Is cooking an egg in the microwave a chemical change or a physical change?
Chemical
What is it called when a gas is turned straight into a solid?
What happens when particles are heated vs. cooled? How do they move?
Answers vary!