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WorksheetsAC 2020 Block Test 1
Total questions: 55
Worksheet time: 47mins
The vertical (up and down) columns in the Periodic Table are called
groups
towers
periods
atomic numbers
The horizontal (side to side) rows in the Periodic Table are called
groups
families
periods
atomic numbers
What is a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means
element
subatomic particle
electron
matter
What is an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row
Periodic Table of Elements
Atomic Theory
Isotopes
Subatomic Particles
What are one or two letters that represent the name of an element
element name
element symbols
atomic number
atomic mass
What is a unique number for each element that equals the number of protons in an atom of that element
element name
element symbol
atomic number
atomic mass
What is the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom?
element name
element symbol
atomic number
atomic mass
What is a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group?
family
period
row
isotope
What is a row on the Periodic Table of Elements?
family
period
row
isotope
What are valence electrons?
Any of an atom's electrons
Electrons located on the first energy level
Electrons not attached to any atom
electrons located on the outer energy level
What period is Lead (Pb) in?
6
4
Metals
4A
What group or family is lead in?
6
4
Metal
4A
What category is silicon (Si) a part of?
Metal
Nonmetal
Metalloid
Halogens
How many electrons does Barium (Ba) have?
13
2
71
56
How many neutrons does Bromine (Br) have?
35
80
45
7
What period contains the element Plutonium (Pu)?
8
6
7
Plutonium doesn't exist
How many electrons does a Radon (Rn) ION have?
86
8
33
Radon does not form an ion
What group or family is Mercury (Hg) in?
2B
2A
Metals
Alkali metals
What is group name of the most reactive metals?
Noble gases
Halogens
Alkali metals
Alkaline earth metals
Why are halogens so reactive?
They want to get rid of their only valance electron
They only need one more electron
They are non reactive, they have a full shell
