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Science 78 Chapter 11 Flashcards | StudBud
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Science 78 Chapter 11
Science 78 Chapter 11
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The Periodic Table
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
Which property is characteristic of most metals?
dull in appearance
solid at room temperature
poor conductor of electricity and heat
gas at room temperature
2
What type of elements are made in laboratories and do not occur naturally on Earth?
metalloids
metals
synthetic
nonmetals
3
Which of the following is a property of the elements highlighted in blue?
conductivity
liquid at room temperature
dull appearance
hard
4
How many electrons are in the following element?
40
22
18
39.948
5
Who formed the first periodic table?
Mendeleev
Democritus
Moseley
Dalton
6
Which substance does not have the property of ductility?
platinum
silver
water
copper
7
What term is used for the two periods indicated by the red arrow in the figure?
lanthanide and actinide series
metalloids
main-block transition elements
non-metals
8
Which element would make the best electrical wire?
zinc
copper
lithium
sodium
9
Which group contains elements that are gases at room temperature?
metals
nonmetals
metalloids
isotopes
10
In the modern periodic table, elements are listed according to _____________.
increasing atomic number
the order they were discovered
increasing density
increasing atomic mass
11
Elements tend to decrease in metallic properties _____________.
from top to bottom across a group
right to left across a period
with increasing atomic number
from left to right across a period
12
What type of elements can react with metals to form salts?
noble gases
semiconductors
halogens
metalloids
13
What elements are usually gases or brittle solids at room temperature?
metals
nonmetals
transition elements
metalloids
14
Which group of elements in the periodic table contains only noble gases?
Group 13
Group 1
Group 10
Group 18
15
Substances that can be easily pulled into thin wires are ___________.
malleable
inflexible
semisolid
ductile
16
How many protons are in the following element?
15.99
16
8
2
17
How many neutrons are in the following element?
28
31
58.693
59
18
A column in the periodic table is called a ___________.
series
element key
group
period
19
The elements highlighted in green have both metallic and nonmetallic properties. Which term refers to these elements?
metalloids
metals
nonmetals
halogens
20
Ninety percent of all the atoms in the universe are _______________.
hydrogen
oxygen
nitrogen
carbon
21
Malleability is _______________.
the ability to be hammered, pressecd, or rolled into thin sheets
the ability to be drawn out into a wire
shininess of an object
the hardness of an object
22
Elements that are shiny and good conductors of electricity are ____________.
metalloids
nonmetals
colloids
metals
23
According to the figure, which of the following metals is synthetic?
iridium
cobalt
iron
meitnerium
24
The __________ is a chart created by chemists to organize the elements according to repeated changes in properties
metalloid list
periodic table
mass number
isotope
25
______________ react with other elements only under special laboratory conditions.
Metalloids
Semiconductors
Noble gases
Halogens
26
Which best describes the three general groups of elements?
solid, liquid, and gas
metals, metalloids, and synthetics
metals, metalloids, and nonmetals
metals, nonmetals, and noble gases
27
Which of the following is a characteristic of most metals?
poor conductors of electricity
gases at room temperature
dull in appearance
shiny luster
