Which of the following is not an
element?
1. carbon 2. carbon dioxide
3. nitrogen 4. phosphorus
Identify and describe the
two parts of a solution.
A
Solute – what is
dissolved
B
Solvent – What does the
dissolving
A chemical formula like H2O
represents
1. an element
2. an atom
2. an electron 4. a compound
A substance made up of two or more
elements that have been
chemically combined is a
COMPOUND.
A substance made up of two or more
elements that have been physcially
combined is a
MIXTURE.
1. In lemonade, the lemonade mix
is called the
1. solute.
2. solvent.
3. colloid.
4. solution.
2. In lemonade, the water is
called the
1. solute.
2. solvent.
3. colloid.
4. solution.
Which of the following would help
sugar dissolve faster in water?
1. stirring the water
2. decreasing the solubility of sugar
3. using larger particles of sugar
4. decreasing the water temperature
•# of protons
35
•# of protons
48
# of protons
12
NobleDgases
Identify the sections of the
periodic table.
B
A
C
Elements at the left of the
periodic table are known as
METALS
Elements at the right of the
periodic table are known as
NONMETALS
What do we know about the elements in
group (14)?
They have the same (BUT NOT IDENTICAL)
properties.
Explain what occurs to the atomic number
when moving from left to right on the
periodic table.
Atomic number increases.
1. Where are metals located? To the left of the zigzag line
2. Where are nonmetals located? To the right of the zigzag line
3. Where are metalloids located? Touching the zigzag line
4. Where are noble gases located? Group 18
Which element is a noble gas?
1.hydrogen
2.oxygen
3.neon
4.nitrogen
Identify the solid, liquid and gas! Support your answer.
Gas
- Atoms are very
loosely packed
Solid
Liquid
- Atoms are
tightly packed
- Atoms are
loosely packed
Identify the phase change described. 1.
melting
Solid to liquid:
2. Gas to liquid: condensation
3. Liquid to solid: freezing
4. Solid to gas: sublimation
5. Liquid to gas: vaporization
6. Solid to gas: deposition
For each phase change describe whether
energy is RELEASED or ABSORBED.
1. Melting: ABSORBED
2. Freezing: RELEASED
3. Vaporization: ABSORBED
4. Sublimation: ABSORBED
5. Condensation: RELEASED
6. Deposition: RELEASED
The particles of a substance are
closest together in
1. a solid
2. a liquid
3. a gas
4. plasma
The particles of a substance move
most readily in
1. a solid
2. a liquid
3. a gas
The particles of a substance that does
not have a definite volume or
shape is
1. a solid
2. a liquid
3. a gas
Attractive forces are very strong
between particles in
1. a solid
2. a liquid
3. a gas
4. plasma
When a liquid becomes a solid,
energy
1. does not change
2. is released
3. is absorbed
4. is first absorbed, then released
_______ is the process in which
liquid changes to gas.
1. Sublimation
2. Condensation
3. Evaporation
4. Combustion
The change of a liquid to a solid is
called
1. freezing
2. melting
3. sublimation
4. vaporization
When substances go directly from the
solid phase to the gas phase, the
phase change is called
1. sublimation
2. condensation
3. evaporation
4. vaporization
For the following pictures,
identify whether a physical or
chemical change is occurring.
Identify whether this is a physical or chemical change. Support your answer.
Physical – No new substance was
produced.
Chemical – Carbon dioxide was
produced.
Chemical – ash and carbon dioxide
were produced
Physical – Nothing new was produced.
The ice is melting.
Physical – Nothing new was produced.
The substance is being grinded into
smaller particles.
Chemical – Rust (iron oxide) was
produced.
Chemical – The Alka-Seltzer tablet
released carbon dioxide into the water.