STATES OF MATTER
______ have a definite shape or volume
SOLIDS
Matter has two different changes:_______ and _____ changes.
PHYSICAL AND CHEMICAL CHANGES.
What is a mixture?
It is a combination of two or more substances or ingredients.
There are three types of energy: _________, ________, __________
Thermal Energy, Electrical energy and other types of energy.
What are the three non-renewable energy sources?
Oil, Natural Gas and Coal
_______ have a definite volume but don't have definite shape.
LIQUIDS
What is a physical change?
When matter changes its shape or state.
There are two types of mixture: _________ and _______ mixture
Homogeneous and heterogeneous mixture
What is thermal energy?
It is the temperature a material has.
When we burn petrol, we get two types of energy. What are they?
Thermal and electrical energy
_______ don't have a definite volume or shape.
GASES
It's when matter reacts with other elements and changes into different matter.
There are three ways of separating mixtures: _________ ,__________, ___________.
Evaporation, filtration and seaving.
These three states show how thermal energy changes in matter: ______, ________, __________.
Evaporation, melting and freezing
Where do we extract coal?
From mines
_________ and _________ are properties of matter.
MASS AND VOLUME
There are two types of physical changes: ________ and ________
CHANGE OF STATE / CHANGE OF SHAPE
What is filtration?
Filtration separates solids from liquids.
Where is Electrical energy used? How many types of electrical materials are there?
At home/ There are two types: Electrical conductors and electrical insulators.
What do solar panels do?
They transform Sun's light into electrical and thermal energy.
_________ fill in any container they are put in.
GASES
What is COMBUSTION?
It's a chemical reaction. When we burn wood, it transforms into a another substance: ash.
What is seaving?
Seaving separates big solids from smaller solids.
What is SOUND ENERGY?
On land and in the oceans.