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19 Cards in this Set
- Front
- Back
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Matter |
Anything that has a mass and occupies space.
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Density |
The ratio of the mass of a substance to the volume it occupies. |
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Element |
An element is made up of identical substances and cannot be separated chemically.
Ex: gold, oxygen, hydrogen... |
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Compound |
A compound is made up of identical particles and can be separated chemically.
Ex: water, carbon dioxide, magnesium oxide... |
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Pure substance |
A pure substance is made up of identical particles and cannot be separated physically.
Ex: elements and compounds. |
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Mixture |
A mixture is made of different particles and can be separated physically. |
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What is the test for carbon dioxide, oxygen and hydrogen gas? |
Hydrogen: burning splint test. The splint will make a popping sound and extinguish.
Oxygen: the glowing splint test. The splint will burst into flames.
Carbon dioxide: the burning splint test or the limewater test. The burning splint will go out or the limewater will get cloudy and form a precipitate. |
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Physical property |
A property that can be described using your five senses. Physical properties can help identify a substance. |
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Qualitative physical property |
No measurements required. |
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Quantitative physical property |
Measurements required. |
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Chemical property |
A property that can only be described when a chemical reaction occurred. |
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Name 4 chemical properties |
-reactivity with water -reactivity with acid -flammability -combustibility |
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Name 12 physical properties |
-state -texture -lustre -malleability -hardness -transmission of light -density -melting and boiling point -viscosity -conductivity -solubility -ductility |
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State the particle theory |
1. All matter is made up of tiny particles.
2. Every substance has different particles. All the particles of one substance are the same.
3. The spaces between the particles are bigger than the particles themselves.
4. The particles are always moving. The more heat they take in the faster they move and the further apart they get.
5. The particles have attraction forces and the close the particles are, the strong those forces are. |
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Physical change |
A change of form it shape. No new substance is formed. |
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Physical change |
A change of form it shape. No new substance is formed. |
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Chemical change |
A new substance is formed and a chemical reaction occurred. |
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5 clues for chemical change |
1. Colour change 2. Formation of a precipitate 3. Formation of a gas 4. Formation of heat or light 5. Hard to reverse |
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Characteristic physical property |
A physical or chemical property used to describe a substance. *Unique to a substance* |
