WorksheetsIdentifying Acids & Bases
Total questions: 12
Worksheet time: 24mins
Litmus paper turns from red to blue in
acids
bases
water
Phenolphthalein turns from pink to colorless in
acids
bases
water
A chemical that changes color in acids and bases is called
an indicator
a metal
a non-metal
Which properties are acids? (select all that apply)
Taste sour
Feels slippery
Reacts with metals to produce hydrogen (H)
Turns methyl red to yellow
Turns litmus red
Which properties are bases? (select all that apply)
Taste bitter
Feels slippery
Reacts with metals to produce hydrogen (H)
Turns methyl red to yellow
Turns litmus blue
On the pH scale, where can you find the most dangerous acids and bases?
in the middle
towards the top
on both ends of the scale
On the pH scale, which number identifies a neutral substance?
1
100
7
Which is a basic substance, black coffee or eggs?
black coffee
eggs
Why should you never taste or touch an unknown substance?
Because it would be gross
It could be dangerous
Why not, YOLO
Which substance is more acidic, oranges or bananas?
oranges
bananas
apples
What would happen is you mixed coffee with toothpaste?
based on pH levels they would neutralize
it would become more acidic
it would save time in the morning
What color does phenolphthalein turn in bases?
deep pink
blue
rainbow
