Download 8th Grade Chap 4 Study Guide Answer Section

8th Grade Chap 4 Study Guide
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Which property of bromine could you NOT predict based on the fact that it is a nonmetal in the halogen
family?
a. poor conductor of electricity
c. poor conductor of heat
b. liquid at room temperature
d. highly reactive
2. Which particles in atoms have a positive electric charge
a. nuclei
c. protons
b. electrons
d. neutrons
3. The most useful property of semimetals is their
a. softness and malleability.
c. varying ability to conduct electricitic
current.
b. tendency to be unreactive.
d. ability to be pulled out into long wires.
4. The elements that do not ordinarily form compounds are
a. elements in the carbon family.
c. metals.
b. inert gases.
d. halogens.
5. In the periodic table, the most reactive metals are found
a. in Period 1, the first row across the top.
c. in Periods 6 and 7 at the bottom.
b. in Groups 13 through 16 in the center.
d. in Group 1, the first column on the left.
6. Mendeleev created the first periodic table by arranging elements in order of
a. increasing atomic number.
c. increasing melting points and densities.
b. increasing atomic mass.
d. decreasing atomic mass.
7. In radiation therapy,
a. weak spots in water pipes are found.
b. radioactive isotopes are used as fuel.
c. unhealthy human cells are destroyed.
d. isotopes are traced through a chemical
reaction.
8. The perioc table is organized in horizontal rows called __________.
a. Periods
c. Symbols
b. Colums
d. Groups
9. The element Gold is part of which group?
a. Alkali Metals
b. Transition Metals
c. Actinides
d. Halogen
10. During radioactive decay, atomic nuclei of unstable isotopes
a. are broken down by radioactive bacteria. c. give off nuclear radiation.
b. are unchanged.
d. form chemical bonds.
11. What information in the periodic table indicates the number of protons in an atom?
a. the element’s atomic number
c. the position of the element in its column
b. the element’s chemical symbol
d. the element’s atomic mass
12. To make most synthetic elements, scientists use powerful machines called
a. semiconductors.
c. nebulas.
b. supernovae.
d. particle accelerators.
13. Which element is a semimetal?
a. Oxygen
b. Silicon
14. Most metals are NOT
a. liquid at room temperature.
b. good conductors of heat and electricity.
c. Aluminum
d. Carbon
c. malleable.
d. ductile.
15. Fluorine, chlorine, bromine, and iodine are part of a family called
a. alkali metals.
c. inert gases.
b. halogens.
d. semimetals.
16. The elements in a column of the periodic table
a. have the same atomic mass.
c. are in the same period.
b. have similar properties.
d. have very similar chemical symbols.
17. Which group contains the most elements?
a. semimetals
b. transition elements
c. metals
d. nonmetals
18. Which element is the most abundant in the universe?
a. Oxygen
c. Hydrogen
b. Helium
d. Carbon
19. In general, which of the following statements about metals is true?
a. Metals are highly reactive substances.
c. Metals show a wide range of chemical
properties.
b. Metals need to be stored in sealed
d. Metals do not react with oxygen.
containers for safety.
20. Which element belongs to the inert gases?
a. Helium
b. Oxygen
c. Chlorine
d. Hydrogen
21. A material is said to be ductile if it
a. is a mixture of a metal with at least one
c. can be pulled out, or drawn, into a long
other element.
wire.
b. can be hammered or rolled into flat sheets d. can transfer heat or electricity to another
and other shapes.
material.
22. The two most common alkaline earth metals are
a. iron and silver.
c. copper and zinc.
b. calcium and magnesium.
d. sodium and potassium.
23. Which of the following statements about transition metals is true?
a. They are never found uncombined in
c. They are so soft that they can be cut with
nature.
an ordinary knife.
b. They include familiar metals such as gold, d. They are the most reactive of all the types
silver, copper, and nickel.
of metals.
24. Which group of elements shares characteristics with both metals and nonmetals?
a. halogens
c. salts
b. semimetals
d. lanthanides
8th Grade Chap 4 Study Guide
Answer Section
MULTIPLE CHOICE
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B
PTS: 1
DIF: L2
CaPS.4.4.1 Describe the properties of nonmetals and inert gases.
S 8.7.c
BLM: application
C
PTS: 1
C
PTS: 1
DIF: L2
CaPS.4.4.2 List the uses of semimetals.
STA: S 8.7.c
comprehension
B
PTS: 1
DIF: L2
CaPS.4.4.1 Describe the properties of nonmetals and inert gases.
S 8.3.f | S 8.7.a
BLM: comprehension
D
PTS: 1
DIF: L2
CaPS.4.3.2 Explain how the reactivity of metals changes across the periodic table.
S 8.3.a | S 8.7.a
BLM: comprehension
B
PTS: 1
DIF: L2
CaPS.4.2.1 Explain how Mendeleev discovered the pattern that led to the periodic table.
S 8.7
BLM: comprehension
C
PTS: 1
DIF: L1
CaPS.4.5.3 Describe how radioactive isotopes are useful.
S 8.7.b
BLM: knowledge
A
PTS: 1
B
PTS: 1
C
PTS: 1
DIF: L2
CaPS.4.5.2 Identify the types of particles and energy that radioactive decay can produce.
S 8.7.b
BLM: comprehension
A
PTS: 1
DIF: L2
CaPS.4.2.2 Describe how elements are organized in the modern periodic table.
S 8.3.a
BLM: comprehension
D
PTS: 1
DIF: L2
CaPS.4.3.3 Explain how synthetic elements are produced.
S 8.3
BLM: comprehension
B
PTS: 1
A
PTS: 1
DIF: L2
CaPS.4.3.1 List the physical properties of metals.
STA: S 8.7.c
comprehension
B
PTS: 1
DIF: L2
CaPS.4.4.1 Describe the properties of nonmetals and inert gases.
S 8.3.f | S 8.7.a
BLM: application
B
PTS: 1
DIF: L1
CaPS.4.2.2 Describe how elements are organized in the modern periodic table.
S 8.7.a
BLM: knowledge
C
PTS: 1
DIF: L2
CaPS.4.3.1 List the physical properties of metals.
STA: S 8.7.a | S 8.7.c
application
18. ANS: C
PTS: 1
19. ANS: C
PTS: 1
DIF: L2
OBJ: CaPS.4.3.1 List the physical properties of metals.
STA: S 8.7.c
BLM: comprehension
20. ANS: A
PTS: 1
21. ANS: C
PTS: 1
DIF: L1
OBJ: CaPS.4.3.1 List the physical properties of metals.
STA: S 8.7.c
BLM: knowledge
22. ANS: B
PTS: 1
DIF: L1
OBJ: CaPS.4.3.2 Explain how the reactivity of metals changes across the periodic table.
STA: S 8.7.a
BLM: knowledge
23. ANS: B
PTS: 1
DIF: L2
OBJ: CaPS.4.3.2 Explain how the reactivity of metals changes across the periodic table.
STA: S 8.7.a
BLM: comprehension
24. ANS: B
PTS: 1
DIF: L1
OBJ: CaPS.4.4.2 List the uses of semimetals.
STA: S 8.3.f | S 8.7.a
BLM: knowledge