Review for unit test.
Exchange of two different atoms between two compounds.
Displacement of one element in a compound by another element.
Breaking up of a compound to produce two different elements.
Joining together of two elements to form a compound.
Absorption of heat in a chemical reaction.
H2SO4 + Ca(OH)2 --> CaSO4 + 2 H2O
Zn + 2 HCl --> ZnCl2 + H2
KOH + HCl --> KCl + H2O
HNO3 + NaOH --> H2O + NaNO3
2 Al(OH)3 +3 H2SO4 --> Al2(SO4)3 + 6 H2O
AlCl3 and CuCl2
Al(s) Cu(s) and Cl2(g)
AlCl3 and Cu(s)
CuCl2 and Al2
No reaction
Silver tarnishing
Muffins baking
Fireworks igniting
Snow melting
Sodium chloride dissolved in water
2, 3, and 4 only
2, 3, and 5 only
1 and 5 only
1, 3, and 4 only
1, 2, 4, and 5 only
Does not change colour when the pH of the test solution goes from 4 to 9.
Is always red in acid and green in base.
Is rare and can only be obtained as a specialized chemical.
Turns different colours in acids and bases.
Does none of these.
Two
Ten
One hundred
One thousand
Ten thousand
2, 4, and 5 only
1, 4, and 5 only
2, 3, and 4 only
1, 2, and 3 only
1, 2, and 4 only
2(NH4)3PO4(s) + 3Ba(NO3)2(aq) --> Ba3(PO4)2(aq) + 6NH4NO3(s)
2(NH4)3PO4(aq) + 3Ba(NO3)2(aq) --> Ba3(PO4)2(s) + 6NH4NO3(aq)
2(NH4)3PO4(aq) + 3Ba(NO3)2(s) --> Ba3(PO4)2(s) + 6NH4NO3(aq)
2(NH4)3PO4(aq) + 3Ba(NO3)2(aq) --> Ba3(PO4)2(aq) + 6NH4NO3(aq)
1 and 3 only
1, 2, 3, 4, and 5
1, 4, and 5 only
2 and 5 only
3 and 4 only
3, 2
4, 1
2, 3
2, 2
1, 4
I, ii and v only
Ii, iv and v only
Iii and v only
I and iii only
V only
Solution turn pink in phenolphthalein
Red litmus paper stays red
The substance feels slippery
Blue litmus paper turns blue
Oxygen gas is produced when a metal is added
XO.
XO2.
XO4.
X2O.
X2O3.
Formic acid
Sulfuric acid
Nitric acid
Acetylsalicylic acid
Citric acid
Hydrogen gas
Sulfur dioxides
Nitrogen oxides
Carbon monoxide
Carbon dioxide
1
2
3
4
12
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