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WorksheetsUnit I Test Review Part B
Total questions: 20
Worksheet time: 10mins
What is a heterogeneous mixture?
a mixture where you can see the different parts.
a mixture with milk
a mixture where all the parts look the same
a substance mixed with water
Which is an example of a chemical change?
Breaking a rock into smaller pieces
Burning a candle
Stirring butter and sugar together
Adding food coloring to water
True or False: All chemical reactions result in a new substance.
True
False
What is the correct formula for density?
mass / volume
volume / mass
weight / volume
matter / weight
Using the density formula, find the density of an object whose mass is 50 grams and whose volume is 5 cm?
250g/cm
.10 g/cm
10 g/cm
55 g/cm
What is an example of a homogeneous mixture?
pepperoni pizza
trail mix
spaghetti and meatballs with sauce
orange juice
True or False: H2 is a molecule because it has more than one atom.
true
false
Which is an example of a physical change?
Iron turns red/brown when it rusts.
water boils to create water vapor.
wood burns to make smoke and ash.
carbon dioxide mixes with limewater to create chalk.
Jake is cooking eggs. Which step in the process is considered a chemical change.
Jake puts the eggs on the counter.
Jake cracks the egg in a bowl and mixes it.
Jake cooks the egg in a frying pan.
Jake puts salt and pepper on his egg.
What is the difference between molecules and compounds?
A molecule has many elements and a compound has many atoms.
A molecule has many atoms and a compound has many elements.
when the looks changes, but it does not change into something different
chemical change
physical change
A change in matter that produces one or more new substances
chemical change
physical change
Energy is released when something that is warm gets cooler
endothermic reaction
exothermic reaction
Energy is absorbed when something starts cool and gets warmer
endothermic reaction
exothermic reaction
any materials that are made by humans
synthetic materials
natural resources
anything that can be found naturally in the world that humans use
synthetic materials
natural resources
any mixture where you can see the different parts of the mixture and separate them easily.
heterogeneous mixture
homogeneous mixture
any mixture that looks the same all the way through
heterogeneous mixture
homogeneous mixture
the measure of the mass of an object in a given volume
element
solution
density
exothermic reaction
when a solute is dissolved in a solvent
colloid
solution
suspension
