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  1. Problems
  2. /Mixtures and Solutions
  3. /Mixtures, Solutions and Colloids

Mixtures, Solutions and Colloids

Chemistry
+ Upload a Problem
More in Mixtures and SolutionsMixtures, Solutions and ColloidsSeparation of MixturesElements, Compounds and Changes
10 problems
Type:
1.
The beams of a car's headlights can be seen clearly on a foggy night, but not on a clear night.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Medium
2.
A liquid looks like one clear, uniform substance.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Medium
3.
Decide whether each is a solution, a colloid or a suspension, and give one reason.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Easy
4.
Potassium nitrate dissolves 169 g in 100 g of water at 80 °C, and 46 g at 30 °C.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Hard
5.
At 293 K, 36 g of common salt dissolves in 100 g of water to make a saturated solution.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Medium
6.
A chemist pours 40 mL of ethanol into a flask and adds water until the solution measures 250 mL.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Medium
7.
A jar holds 380 g of brine that is 9 % salt by mass.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Medium
8.
A sports drink is made by dissolving 35 g of glucose in 215 g of water.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Easy
9.
Name the main gases in air. Is air a homogeneous or a heterogeneous mixture?
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Easy
10.
Say whether each is a pure substance or a mixture, and give a reason.
High School (9–10), General · Mixtures, Solutions and ColloidsStemPy LabStemPy Lab
Easy