Focus On Physical Science: California Grade 8

Chapter 7: The Periodic Table and Physical Properties

Standard Assessment

1.
An example of a physical property is __________. 5.d
A)acidic
B)color
C)ability to rust
D)flammability
2.
__________ are atoms of the same element that have different numbers of neutrons. 7.b
A)Alpha particles
B)Compounds
C)Isotopes
D)Beta particles
3.
When you observe a physical property, the substance __________. 5.d
A)melts
B)changes
C)burns
D)does not change
4.
Mass and volume depend on the __________ of matter present. 5.d
A)flammability
B)physical properties
C)chemical properties
D)amount
5.
Ice melting is an example of a change of __________. 5.d
A)chemical property
B)vapor
C)state
D)physical property
6.
Elements created by artificial transmutations are called __________. 7.b
A)isotopes
B)synthetic elements
C)degraded elements
D)alpha products
7.
Hg is the symbol for __________. 3.f
A)hydrogen
B)silver
C)mercury
D)helium
8.
What is a common property of nonmetals? 7.a
A)shininess
B)ductility
C)malleability
D)poor conductors
9.
Which element is a gas at room temperature? 7.a
A)hydrogen
B)gold
C)mercury
D)carbon
10.
From left to right, what are the order of zones on a periodic table? 7.a
A)metalloids, metals, and nonmetals
B)metals, metalloids, and nonmetals
C)metals, nonmetals, and metalloids
D)nonmetals, metalloids, and metals
11.
The __________ of an isotope is the number of neutrons plus protons. 7.b
A)atomic number
B)mass number
C)nucleus number
D)half-life
12.
The changing of one element into another through radioactive decay is called __________ . 7.b
A)periodic shift
B)half-life
C)transmutation
D)nuclear fusion
13.
The __________ contains the name, atomic number, symbol, and atomic mass of an element. 3.f
A)bulls eye
B)letter
C)property
D)element key
14.
The __________ of a radioactive isotope is the amount of time it takes for half of a sample of the element to decay. 7.b
A)rate of degradation
B)transmutation rate
C)half-life
D)atomic number
15.
Noble gases __________ react with other elements. 7.a
A)violently
B)do not
C)seldom
D)always
16.
Which of the following would cause a nucleus to be unstable? 7.b
A)the release of an alpha particle from americium-241 in a smoke detector
B)equal numbers of protons and neutrons
C)too many neutrons
D)protons and neutrons packed tightly in the nucleus
17.
__________ is the release of nuclear particles and energy. 7.b
A)Carbon dating
B)Atomic half-life
C)Transmutation
D)Radioactive decay
18.
__________ do (does) not change based on how much matter is present. 5.d
A)Mass
B)Weight
C)Volume
D)Melting point and boiling point
19.
What does density measure? 7.c
A)weight per unit matter
B)matter per unit weight
C)mass per unit volume
D)volume per unit mass
20.
A(n) __________ of elements on the modern periodic table contains elements with similar chemical and physical properties. 7.a
A)area
B)group
C)zone
D)family
Grade 8
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