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Chemistry Y8! Part 2 IGCSE
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Using the periodic table, find the number of protons in 1 atom of Calcium
20
An isotope of magnesium has a nucleon number of 26 and a proton number of 12.How many neutrons in one atom of this isotope of magnesium?
14
An alkaline solution might give a reading of pH....?
Greater than 7pH
Carbon-14 is written this way, what is the symbol for carbon 12?
12 | 6 C
Name this apparatus!
Condenser
Name this apparatus!
Round bottomed flask
Name this scientific apparatus!
Beaker
Another word for unreactive is...
inert
What material in your experiments this year poses this hazard?
Potassium, Sodium...
The hazard this sign shows is...
Corrosive
A mysterious Metal X does not react with water or diluted hydrochloric acid. What could this metal be?
Gold
How would you show that a solution is alkaline?
Universal indicator changes from green to blue/purple, litmus paper changes blue
Describe a test for hydrogen gas
A lighted splint produces a squeaky pop sound
Describe a test for carbon dioxide gas
A lighted split extinguishes
Why are constant variables important in an experiment?
To ensure results are fair
Word equation for nitric acid with calcium carbonate
calcium carbonate + nitric acid -> calcium nitrate + carbon dioxide + water
When unsure of the reliability of experiment results, you should....
Repeat the experiment


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