Challenge 1
everything that has mass and takes up space
What is matter
the kind of matter that does not flow and has its own shape
What is a solid?
A kind of matter that flows. The particles can move past each other. The particles are not tightly packed, but they are not free flowing.
What is a liquid
A kind of matter that flows and takes the shape of a container. The particles are free flowing.
What is a gas
liquid to a gas (e.g., water vapour)
absorbing heat
The state of matter where the particles are the most tightly packed together
What is a solid
a change of state from liquid to gas
What is evaporation?
ketchup, apple juice and hand sanitizer are all....
liquids
the process of changing from one state of matter to another state
What is change of state?
when an ice cube melts, is it absorbing or releasing heat
absorbing
the process of becoming hard
What is solidification?
when a solid becomes a liquid
a change that occurs to matter where the substance is changed to something new
What is a chemical change?
Is baking a cake a chemical or physical change?
Chemical Change
solid to a liquid
absorbs heat
a change to a way a substance looks or feels, without changing what it is made of
What is a physical change?
A change in state of matter that can be "undone" or turned back
What is a reversible change?
a change in state from gas to liquid
What is condensation?
a change that is permanent
What is a reversible change?
When a puddle freezes on a cold day, what is happening to the heat
The heat is being released
a smell, the production of gas, a change of colour, a build up of a new substance
What is an indicator of a chemical change?
helium, carbon dioxide, oxygen are exmaples of
gases
boiling an egg is an example of a physical or chemical change?
Chemical Change
changing a solid to a gas (without becoming a liquid first)
What is sublimation
A gas to a liquid (condensation)
releases heat