WorksheetsIntroduction to Acids vs Alkali
Total questions: 27
Worksheet time: 14mins
Are ALL acid corrosive?
Yes
No
What does an indicator do?
It tells us whether a substance is an acid or alkali
It tells us what the substance is made out of
It tells us whether a substance is cold or hot
What color would red litmus paper be when touching an alkali?
The paper disappear
It would stay red
It would turn blue
It would turn purple
What color would blue litmus paper be when touching an acid?
It would stay the same
It would be purple
It would be red
What are the properties of alkalis?
Soapy touch
Sour taste
Bitter taste
A pH of 6 or below
A pH of 8 or above
What are the properties of acids?
Sweet taste
Sour taste
A pH of 6 or below
Spicy taste
What happens when an alkali and acid is mixed together?
They become neutral if an acid and alkali is added equally
They explode as soon as they've touch each other
They have shown no reaction
The color changes to blue when mixed for a short time
Some food contains acid
True
False
Most cleaning products contains alkali
True
False
Select the alkali(s) in some cleaning products
Sodium hydroxide
Sodium bicarbonate (baking soda)
Potassium hydroxide
Sodium Chloride
Which food(s) contains acid?
Lemon
Lime
Cola
None of the above
The image shows a pH scale. Which option indicates a strong alkali?
a
b
c
d
The image shows a pH scale. Which option indicates a strong acid?
a
b
c
d
What is the substance with a neutral pH of 7?
Milk
Water
Orange Juice
Blood
Which of these substances is an acid?
Ammonia
Oven cleaner
Vinegar
Soap
What is the range of the pH scale?
0 -14
1 - 14
1 - 6
12 - 14
Which of these substances is an acid?
Water
Bleach
Orange juice
Washing powder
What type of solution has a pH of 12?
Neutral
Acidic
Alkali
Which of these is an acid?
Sodium Hydroxide
Hydrogen Chloride
Water
Sodium Chloride
Universal indicator is added to a solution. The solution turns purple. The solution could contain
citric acid
hydrochloric acid
sodium hydroxide solution
only water
What does this hazard symbol mean?
toxic
flammable
corrosive
explosive
HCl, HNO3 and H2SO4 are all acids. What element do all acids contain?
oxygen
hydrogen
nitrogen
sulfur
What is the substance with a neutral pH of 7?
Milk
Water
Orange Juice
Blood
Which of these substances is an acid?
Water
Bleach
Orange juice
Washing powder
What is the substance with a neutral pH of 7?
Milk
Water
Orange Juice
Blood
Which of these substances is an acid?
Ammonia
Oven cleaner
Vinegar
Soap
To measure pH we can use an ...
watch.
thermometer.
indicator.
ruler.
