year 10 review material world – acids and materials
TRANSCRIPT
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YEAR 10 REVIEW
Material World – Acids and Materials
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1. All matter is made up of atoms. Label the parts of the atom.
1. Nucleus2. Proton 3. Neutron4. Electron5. Shell
Hint: the red particles are positive
A
B
C
D
E
ECADB
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2. Fill in the missing symbols and names of the elements.
Hydrogen ChlorineHe K
Lithium SiliconBeryllium Sodium
B MgCarbon Fluorine
N OAluminium Sulfur
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3. Work out what type and how many atoms are in a compound by looking at its formula.
4
H2O = 2 x H and 1 x O CO2 2FeS C6H12O6 3O2 MgCl2 Ca(OH)2
= 1 X C and 2 X O = 3
= 2 X Fe and S X O = 2
= 6 X C and 12 X O and H X 12= 24= 3 X 2 X O = 6
= 1 X Mg and 2 X Cl = 3
= 1 X Ca and 2 X O and 2 X H = 5
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4. Complete the following word equations. Acid + __________ salt + water Acid + __________ salt + water + carbon
dioxide Acid + __________ salt + hydrogen gas
Hint: use metal, carbonate, and base
Metal
Carbonate
Base
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6. Name 3 acids and 3 bases.AcidsLemon juiceBile in stomachVinegar
BasesClothes washing powderBaking sodaSoap
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7. Where would you find acids, bases and water on the pH scale? Strong acids – pH = 0
Weak acids – pH = 6 Water – pH = 7 Weak bases – pH = 8
Strong bases – pH = 14
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8. Match the test with the gas it tests for. 1. Hydrogen2. Oxygen3. Carbon dioxide
A. Limewater will change from clear to white; a lit splint will go out
B. A lit splint blown out will relightC. ‘pop’ test – a flame goes out
with a ‘pop’
CB
A
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9. Give a use and a reason for that use for each metal listed.
Metal Use ReasonGoldCopperMercuryChromium
Aluminium
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10. What is needed for complete combustion? Lots of oxygen
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11. What are the products of complete combustion? Incomplete combustion?
Hint: What colour forms on the bottom of a beaker if it is held over a yellow flame?
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