Worksheets7Ec Making an Ash out of it.
Total questions: 10
Worksheet time: 5mins
In Arabic, ashes were called al qali.
True.
False.
Alkalis turn litmus ............
red.
blue.
purple.
yellow.
Pure water turns litmus paper what color?
Red.
Purple.
Blue.
Yellow.
We use the word 'alkali' to describe a group of substances that feel ..........
soft.
soapy.
hard.
squishy
What is the pH of pure water?
1
3
7
10
Salt solutions are .............
acid.
neutral.
alkali.
none of the above.
Sugar solutions are ................
acidic.
neutral.
alkali.
none of the above.
Oven Cleaners often contain ..........
acids.
alkali.
The following oven cleaner has a hazard symbol indicating it is ...........
radioactive and an irritant.
poisonous and harmful.
flammable and corrosive.
flammable and an irritant.
Many alkalis are too dangerous to feel.
True.
False.
