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Atoms and the Periodic Table
Atoms and the Periodic Table
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A #science quiz with a focus on #atomic structure and the #periodic table
Flashcards
63 cards
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Questions
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Answers
1
Which elements have properties of both metals and nonmetals?
metals
gases
nonmetals
metalloids
2
Which statement about noble gases is correct?
They form compounds with very bright colors.
They are highly reactive with both metals and nonmetals.
They exist as single atoms rather than as molecules.
They rarely form compounds in nature.
3
A metalloid acts as a conductor at _____.
low temperatures
none of these
mid-temperature
high temperatures
4
Among the alkali metals, the tendency to react with other substances _____.
decreases from top to bottom within the group
varies in an unpredictable way within the group
increases from top to bottom within the group
does not vary greatly among the members of the group
5
Which of the following is NOT matter?
rocks
water
sound
air
6
Which of the following is NOT part of an atom?
positron
proton
electron
neutron
7
Which of the following is NOT matter?
sunlight
moon
force
grass
8
Elements on the far right of the periodic table are classified as nonmetals
False
True
9
Elements were arranged in order of increasing atomic mass on Mendeleev's first periodic table.
False
True
10
Which of the following is NOT on an element key?
atomic number
state of matter
density
symbol
11
The elements in the second column from the left edge of the periodic table are the _____.
alkali metals
lanthanide and actinide series
alkaline earth metals
transition elements
12
Mendeleev was unable to foresee future discoveries based on his table of elements.
False
True
13
Which of the following does NOT describe an alkali metal such as lithium?
hard to cut
silvery appearance
low density
react quickly with oxygen
14
Which of the following is NOT one of the repeating patterns in Mendeleev’s periodic table?
melting point
atomic mass
boiling point
reactivity
15
Approximately _____ atoms can fit across a human hair.
1,000
1 million
10,000
100,000
16
The maximum number of electrons in the second energy level of an atom is ____.
8
2
18
4
17
Most atoms are chemically unstable when its outer energy level 8 valence electrons.
True
False
18
Which of the following elements is the most common element in the universe?
nitrogen
helium
hydrogen
oxygen
19
Group 14 on the periodic table contains metals, nonmetals, and metalloids.
True
False
20
Elements on the far right of the periodic table are classified as nonmetals
False
True
21
Two or more substances are combined; and each substance can be separated by physical means
mixture
chemical change
element
compound
22
Which of the following is NOT a property of all metals?
malleable when solid
does not conduct heat
conduct electricity
shiny
23
Properties of a compound are the same as the properties of the elements making up the compound.
True
False
24
The large group of elements in the main part of the periodic table are the _____.
alkaline earth metals
alkali metals
lanthanide and actinide series
transition elements
25
The position of elements in the periodic table tells you nothing except its size.
True
False
26
The place of an element in the modern periodic table is determined by its _____.
density
chemical activity
atomic mass
atomic number
27
Helium and most nonmetals are found in which area of the periodic table?
On the right side.
On the left-most side.
In the middle column of the periodic table.
In the bottom rows.
28
Which general statement does NOT apply to metals?
Most metals are ductile.
Most metals are brittle.
Most metals are good conductors of electric current.
Most metals are malleable.
29
Which of the following is considered a building block of matter?
pebble
atom
drop of water
light wave
30
What is the group # for elements that have a stable number of electrons in their valence shell?
2
18
1
17
31
A single horizontal portion of the periodic table, as shown , is called _____.
a class
a period
a group
a method
32
Approximately how many elements are metals?
all of the periodic table
half of the periodic table
three-fourths of the periodic table
one-third of the periodic table
33
When Mendeleev developed the first periodic table, there were approximately ___ known elements.
60
100
10
160
34
The particles that make up an atom are ____.
electrons, protons, and nuclei
protons, neutrons, and electrons
protons, neutrons, and nuclei
elements, protons, and electrons
35
A halogen is an element that can react with a metal and form _____.
sulfur
a salt
a liquid
metal
36
Elements in a group on the periodic table are in the same state at room temperature.
False
True
37
Alkaline earth metals are commonly found in rocky terrains.
True
False
38
Halogens are only found in nature as _____.
compounds
liquids
molecules
salts
39
Substances are either elements or mixtures.
True
False
40
Dot diagrams are used to represent ____.
outer electrons
atomic mass
protons
the structure of the nucleus
41
Atoms of different elements have different numbers of protons.
True
False
42
All atoms have the same number of _____.
protons
neutrons
electrons
None of these
43
Most of the mass of an atom is found in its ____.
nucleus
atomic number
mass number
electron cloud
44
Which of the following is NOT one of the main elements in the human body?
lead
carbon
hydrogen
oxygen
45
Halogens frequently occur in nature as free elements.
False
True
46
Its easier to remove an electron from an outer energy level than from one closer to the nucleus
False
True
47
In general, nonmetals are ____.
good conductors of electricity
malleable and ductile
good conductors of heat
gases at room temperature
48
All periods on the periodic table contain the same number of elements.
False
True
49
The energy of an electron varies depending upon which energy level that electron occupies.
False
True
50
A metal is often shiny but is a poor conductor of electricity.
True
False
51
_____ is another name for a homogeneous mixture.
Liquid
Substance
Suspension
Solution
52
A halogen is found in group _____.
16
14
17
15
53
Carbon is one of many nonmetals in group 14.
False
True
54
What is meant by
periodic
in Periodic Table?
the table has repeated cycles
the table can be changed as needed
the elements occur more than once
the table is only good for so long
55
In an atom, electrons ____.
are located in the nucleus
travel outside the nucleus
are always in the same place in an atom
are paired with neutrons
56
How many dots are shown in the electron dot diagram for calcium, element number 20?
7
2
1
5
57
A fruit salad is a homogeneous mixture.
True
False
58
A metalloid is an element with the same properties as a metal.
True
False
59
The alkali metals are very stable and do not react easily with other elements
True
False
60
In an atom, an electron that is close to the nucleus is on the highest energy level.
False
True
61
For an atom to be neutral, the number of protons must equal the number of neutrons.
True
False
62
The energy levels of an atom are occupied by ____.
ions
neutrons
electrons
protons
63
How many electrons are needed in the outer orbital of most atoms for the atom to be stable?
6
4
8
2
