Mixtures
An example of a heterogeneous mixture is:
a) Salt water
b) Air
c) Chocolate chip cookies
d) Sugar dissolved in water
Chocolate Chip cookies
Which of the following is a pure substance?
a) Orange juice
b) Table salt (NaCl)
c) Salad
d) Air
b) Table salt (NaCl)
In our solvent lab, which material did not dissove?
sand
In a solution of saltwater, what is the solute?
a) Water
b) Salt
c) Air
d) Sugar
Salt
Why do farmers use pesticides?
a) To protect crops from pests
b) To make the soil harder
c) To create more pollution
d) To stop plants from growing
) To protect crops from pests
1. What is a mixture?
a) A material made of only one substance
b) A material made of two or more substances combined
a) A material made of only one substance
Which of these is a pure substance?
a) Sugar
b) Chocolate milk
c) Pizza
d) Sand
Sugar
In our solvent lab, which materials did dissolve?
Salt and Sugar
8. Which of these is typically the solvent in sweet tea?
a) Sugar
b) Tea leaves
c) Water
d) Ice cubes
Water
What is a benefit of using compost instead of throwing food waste in the trash?
a) It makes soil richer for growing plants.
b) It pollutes the air.
c) It wastes energy.
d) It makes soil unhealthy.
a) It makes soil richer for growing plants.
2. Which of these is an example of an everyday mixture?
a) Pure water
b) Gold
c) Oxygen gas
d) Trail mix
d) Trail mix
3. A pure substance is made up of:
a) Two or more types of particles
b) Only one type of particle
b) Only one type of particle
What type of mixture was green tea at our picnic ?
homogenous
7. In a solution, the solute is:
a) The substance that does the dissolving
b) The substance that dissolves
c) Always a liquid
d) Always the larger amount
b) The substance that dissolves
What is one problem caused by pollution?
a) Cleaner air
b) Harm to animals and plants
c) More forests
d) Healthy oceans
b) Harm to animals and plants
. What is a key difference between homogeneous and heterogeneous mixtures?
a) One is a liquid, the other is a solid
b) One can be separated, the other cannot
c) One looks the same throughout, the other doesn't
d) One is natural, the other is man-made
c) One looks the same throughout, the other doesn't
What is a pure substance?
a) Something made of only one kind of particle
b) A mix of two things
c) A liquid
d) Something with many colors
a) Something made of only one kind of particle
what type of micture were our cookies at our picnic
heterogeneous
In lemonade, what is the solvent?
a) Lemon juice
b) Water
c) Sugar
d) Ice
water
a) Planting trees
b) Using cars and factories
c) Drinking clean water
d) Cleaning beaches
b) Using cars and factories
5. Which of these is a characteristic of a homogeneous mixture?
a) You can see different parts
b) It's not uniform throughout
c) It looks the same throughout
d) It's always a solid
c) It looks the same throughout
Which is NOT a pure substance?
a) Water
b) Gold
c) Orange juice
d) Salt
c) Orange juice
We created a substance that jiggled but did not poor out. what was it made of?
Baking soda and water
Which of these is an example of a solution?
a) Sugar dissolved in water
b) Oil mixed with water
c) Sand and rocks
d) Ice cubes in a drink
a) Sugar dissolved in water
What is one benefit of treating sewage waste?
a) It pollutes rivers.
b) It helps clean water for reuse.
c) It creates more waste.
d) It makes water dirty.
b) It helps clean water for reuse.