Compounds:Made of Elements
Properties of Compounds
Breaking Down Compounds
Compounds in Your World
100
Elements join in a specific ratio according to their masses to form this.
This is a compound.
100
These include melting point, density, and color.
These are physical properties.
100
Some coompounds can be broken down into their elements by what.
What is chemical changes.
100
Some compounds must be broken down to provide elements or other compounds that can be used as these.
These are raw materials.
200
This is a pure substance composed of two or more elements that are chemically combined.
This is a compound.
200
Compounds can also be identified by these.
These are chemical properties.
200
Other compounds break down into what instead of elements.
What is simpler compounds.
200
Ammonia is used to make this.
This is fertilizer.
300
When atoms of two or more elements join together these parts of a compound form.
These are molecules.
300
A compound has properties that differ from those of these, which form it.
These are elements.
300
The only way to break down a compound is through this.
This is a chemical change.
300
These are compounds found in all living things.
These are proteins.
400
Elements combine by reacting, or undergoing this.
This is a chemical change.
400
What compound is formed from two very dangerous elements and has unique properties.
What is sodium chloride.
400
Two ways to break down a compound by adding energy are these.
These are by applying heat or energy.
400
Some plants use this to get the energy they need.
This is nitrogen.
500
What is the ratio of the mass of hydrogen to the mass of oxygen in water.
What is 1:8.
500
Some compounds do this with acid and light.
This is react.
500
Heating the compound mercury(II) oxide breaks it down into these.
These are mercury and oxygen.
500
Another compound that plays an important role in your life is what.
What is carbon dioxide.
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