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Chapter 14 Periodic Table Flashcards | StudBud
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Chapter 14 Periodic Table
Chapter 14 Periodic Table
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#periodictable #chemistry #science #8thgrade
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1
As the atomic numbers of elements increase, their atomic weights:
remain the same
decrease
increase
are unrelated to a charge in their atomic numbers
2
The most abundant element in Earth's crust is:
oxygen
nitrogen
silicon
carbon
3
A period's number on the periodic table corresponds to the number of
energy levels of the atoms in the period
compounds that may be formed by an element in the period
electrons an atom in the period can accept when reacting
neutrons in the nuclei of atoms in the period
4
The location of metals on the periodic table is on the:
right
left
bottom
top
5
An example of a metalloid, elements with properties between metals and non-metals, is
oxygen
iron
silicon
copper
6
Of the following elements, the one most essential to life on Earth is:
carbon
silicon
iron
oxygen
7
Properties such as boiling point, density, and specific heat are known as chemical properties
False
True
8
Most non-metals on the periodic table are located on the:
right
top
left
bottom
9
This diagram represents info that can be found on a periodic table. What does B represent?
Element symbol
Atomic mass
Atomic number
Mass number
10
This atom contains 4 electrons in the 3rd level. What is the element that is represented?
Chromium
Beryllium
Carbon
Silicon
11
The group of elements that tend to be found as toxic gases or liquids in their pure form
alkali earth metals
alkali metals
halogens
12
2nd energy level of an oxygen atom has 6 electrons. The number of electrons found in this atom
6
16
2
8
13
On periodic table, metals are found, in general, on the left side of the table
True
False
14
Horizontal rows on the periodic table are called:
periods
boxes
columns
groups
15
Solid elements that are poor electrical and thermal conductors are most likely to be metal
True
False
16
Chemical property; 1 substance changes into different substance
True
False
17
Steel can be described as all of the following EXCEPT a(n)
conductor
alloy
mixture
element
18
Atomic weight is approximately the same as:
the element symbol
the mass number
an atomic mass unit
the atomic number
19
All of the following are characteristics of metal EXCEPT:
ductile
good conductors
shiny
brittle
20
An element essential to the manufacture of DNA and glow in the dark plastic is:
sulfur
fluorine
phosphorus
nitrogen
21
This diagram represents info that can be found on a periodic table. What does D represent?
Element symbol
Atomic Mass
Mass number
Atomic number
22
An example of a chemical property of a substance is its
density
melting point
reaction rate
specific heat
23
Characteristics of non-metals include all of the following EXCEPT:
ductile
poor conductors
dull
brittle
24
Elements used to make semiconductors for computers include germanium and:
oxygen
iron
carbon
silicon
25
An atomic mass unit is the approximate mass of a single:
proton
carbon molecule
electron
carbon atom