Přejít k hlavnímu obsahu
Přihlásit se
Sign up for FREE
arrow_back
Knihovna

Pure Substances and Mixtures Content Quiz_22.23

star
star
star
star
star
Poslední aktualizace 2 months ago
9 Dotazy
1
1
1
1
1
1
Otázka 1
1.

How are homogeneous mixtures and heterogeneous mixtures similar?

Otázka 2
2.

How are pure substances and mixtures different?

This graph shows the effect of temperature on the time it takes salt to dissolve in water.

Otázka 3
3.

How many minutes did it take for the salt to dissolve in cold water?

Otázka 4
4.

In what temperature of water does salt dissolve the fastest?

Otázka 5
5.

Salt water is a homogenous mixture. Can it be separated physically?

Otázka 6
6.

Gold is an element. What is true about gold?

This is calcium carbonate.

1
Otázka 7
7.

What is calcium carbonate?

1

This is kachumbari. People eat it in East Africa.

2
Otázka 9
9.

Is kachumbari an element, compound, homogeneous mixture (solution), or heterogeneous mixture? Why?

Kachumbari is a _____________________ because _________________________________.

Otázka 8
8.

How do you know what calcium carbonate is?