How are homogeneous mixtures and heterogeneous mixtures similar?
How are pure substances and mixtures different?
This graph shows the effect of temperature on the time it takes salt to dissolve in water.
How many minutes did it take for the salt to dissolve in cold water?
Salt water is a homogenous mixture. Can it be separated physically?
Gold is an element. What is true about gold?
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This is calcium carbonate.

What is calcium carbonate?
This is kachumbari. People eat it in East Africa.
What is kachumbari?
In what temperature of water does salt dissolve the fastest?
How do you know what calcium carbonate is?
How do you know what kachumbari is?