Vocabulary
What does all matter consist of?
particles
What change of state is this?
Solid --> adding heat --> liquid
Meilting
Can a chemical reaction be undone?
No
Particles are in a fixed position
Solid
What is the first thing we do in an investigation?
Ask a question
What is a change of state?
When matter changes from one form to another.
What change of state is this?
liquid --> removing heat --> Solid
Solidifying
List three examples of a chemical reaction
Cooking, baking, rust, breathing, vinegar and baking soda, cement, glass, rubber, plastic, etc.
The particles cam easily slide around each other.
Liquid
What do we call the things we need to carry out the experiment?
Equipment
What is a chemical reaction?
Mixing two or more substances together and they react to make a new substance.
Describe the particle model when melting occurs.
The particles gain movement energy and begin to move away from each other.
What two substances do you need to cause rust.
Water and rust
Liquid
What do we call an educated guess?
a prediction
What is a material?
a mixture of substances
Describe the particles when solidifying occurs.
The particles lose movement energy and move closer together.
What do the substances in a chemical reaction do when they are mixed together?
They react
Particles are vibrating
Solid
What is a fair test?
A test where all the factors are the same except for the one factor we are investigating.
What is a substance?
a pure type of solid liquid or gas
Describe how a powder can behave like a liquid.
A powder can be poured and take the shape of its container
What new substance is created when we combine limestone, soda ash and sand?
Glass
They have a fixed volume
Solid AND Liquid
What does the conclusion explain?
The conclusion explains what we learned in the investigation and explains the results.