WorksheetsUnit 1 Review: Classifying Matter
Total questions: 30
Worksheet time: 23mins
Molecules that stick to the same type of molecules.
cohesion
adhesion
hydrophilic
hydrophobic
Ice floats on water because
adhesion
cohesion
water expands when it freezes
water shrinks when it freezes
A substance with a pH of 6 is called a....
Base
Acid
A solution is a(an)...
chemical reaction
breaking of a chemical bond
combination of two or more liquids
evenly distributed mixture of two or more substances
Capillary action is....
adhesion
cohesion
change in matter (heat of fusion)
both adhesion and cohesion
Which acid listed is the strongest acid?
Hydrochloric acid pH 1.0
Sulfuric acid pH 1.2
Tomatoes pH 4.2
Water pH 7.0
As you added drops to the coins, each drop stuck to the other water because of ________________.
adhesion
cohesion
capillary action
specific heat
Capillary Action is key for
Water moving from roots to leaves in plants
Air moving from mouth to lungs
Ice floating on water
Water moving to lower areas
The tightness across the surface of water that enables paper clips to float is ____________.
adhesion
capillary action
surface tension
polarity
Adhesive means ........
the water molecules stick to each other
the water molecules stick to other surfaces
the water molecules are less dense
the water molecules are far apart
Water droplets take a spherical shape (as pictured) because of ____________
adhesion
cohesion
capillary action
solubility
Surface tension is the property of water in which...
water molecules at the surface tend to stick together.
water spills easily.
water tends to be see-through.
Refer to the picture of water sticking to a leaf; this is occurring because of:
Adhesion
Cohesion
Describe COHESION.
Water molecules attracted to other substances.
Water molecules climbing upwards against the force of gravity.
Water molecules dissolving many substances because of its polarity.
Water molecules attracted to other water molecules.
What two elements make up water?
Helium and oxygen
Hydrogen and oxygen
helium and carbon
oxygen and carbon
What word describes when water is attracted to other substances?
cohesion
adhesion
capillary action
surface tension
A sour taste is a characteristic of:
acids
bases
neutral
pH scale
Which is a characteristic of a base?
tastes sour
found mostly in foods
feels slippery
turn litmus paper red
The pH scale is a range from:
1-7
1-14
1-5
1-20
A pH of 14 is a .....
strong acid
weak acid
Strong base
Weak base
What is the only substance with a neutral pH of 7?
Milk
Orange Juice
Water
Blood
Which of the following is a mixture?
(circles of different colors represent different types of atoms)
(circles that are touching are chemically bonded)
Which of the following is a compound?
(circles of different colors represent different types of atoms)
(circles that are touching are chemically bonded)
This picture represents which of the following?
element
compound
mixture of elements
mixture of compounds
This picture represents which of the following?
element
compound
mixture
The smallest unit of an element is
a compound.
a molecule.
an atom.
a mixture.
Which of the following is a mixture?
oxygen
gold
sand
water
True or false: Air is a mixture.
true
false
Is salt (NaCI) a compound or an element?
Compound
element
What is a substance made of two or more elements that are chemically combined called?
A. element
B. compound
C. mixture
D. solution
