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Acids and Bases (National 5 Chemistry)
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calcium hydroxide and phosphoric acid will make calcium phosphate salt. This salt is soluble.
 
False
 
True
The net ionic equation of the reaction of an acid with an alkali is
 
H<sup>+</sup> + OH<sup>-</sup> --&gt; H<sub>2</sub>O
 
H<sup>+</sup> + OH<sup>-</sup> --&gt; CO<sub>2</sub>
 
2H<sup>+</sup> + OH<sup>-</sup> --&gt; H<sub>2</sub>O
 
2H<sup>+</sup> + CO<sub>3</sub><sup>2-</sup> --&gt; CO<sub>2</sub> + H<sub>2</sub>O
When Magnesium oxide neutralises sulphuric acid the salt produced is called..
 
magnesium sulphate
 
magnesium sulphide
 
sulphur magneside
 
magnesium sulphorous
The general word equation of the reaction of an acid with a metal is
 
metal + acid --&gt; salt + hydrogen
 
metal + acid --&gt; salt + vinegar
 
metal + acid --&gt; salt + water
 
metal + acid --&gt; salt + carbon dioxide
In a neutralisation reaction the pH moves....
 
towards 7
 
towards 14
 
towards 1
 
towards Glasgow
The number of moles of lithium hydroxide in 500 cm3 of water of 0.1 mol/l solution is
 
0.05 mol
 
50 mol
 
0.5 mol
 
5 mol
The concentration of a solution of HCl containing 0.1 mol in 50 cm3 of water is
 
2 mol/l
 
0.002 mol/l
 
0.02 mol/l
 
0.2 mol/l
An alkaline solution has a higher concentration of hydroxide ions than pure water.
 
True
 
False
The pH of the water is neutral (pH 7) because there...
 
is a tiny but equal amount of hydrogen and hydroxide ions
 
are no ions at all
 
are no hydrogen ions
 
are no hydroxide ions
Non-metal oxides turn the pH of the water acidic, while metal oxides turn it alkaline.
 
True
 
False
What is another word for combustion?
 
Burning
 
Incinerating
 
Melting
 
Exothermic
The ionic formula for Magnesium chloride is...
 
Mg<sup>2+</sup>(Cl<sup>-</sup>)<sub>2</sub>
 
Mg<sup>2+</sup>Cl<sup>-</sup><sub>2</sub>
 
Mg<sup>+</sup>Cl<sup>-</sup>
 
(Mg<sup>+</sup>)<sub>2</sub>Cl<sup>-</sup>
All acids contain the positive hydroxide ion (OH-)
 
False
 
True
The formula for calcium hydroxide is
 
Ca(OH)<sub>2</sub>
 
CaOH<sub>2</sub>
 
CaOH
 
CaO<sub>2</sub>H<sub>2</sub>
The formula for nitric acid is...
 
HNO<sub>3</sub>
 
HCl
 
H<sub>2</sub>SO<sub>4</sub>
 
H<sub>3</sub>PO<sub>4</sub>
What all fruits have in common?
 
They all contain acid
 
They are full of proteins
 
They all contain bases
 
They all full of fat
Which is the most accurate way of measuring pH?
 
electronic pH meter
 
Indicator
 
pH paper
 
Just use your finger
Which one is the most alkaline in the pH scale?
 
Oven Cleaner
 
Stomach acid
 
Baking soda
 
Tomatoes
The products in the picture are examples of everyday....
 
Bases
 
Acids
 
Salts
 
Cleaning products
Acids have a pH less than 7
 
True
 
False
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