Font size
WorksheetsElements, Periodic Table, & Reactivity
Total questions: 46
Worksheet time: 25mins
An allotrope of carbon that is soft and can be used as a lubricant is
diamond.
silicon.
graphite.
sand.
In the gaseous state _______ form diatomic covalent molecules.
alkali metals
noble gases
halogens
alkaline earth metals
When hydrogen reacts with the active metals, it
gains one electron.
shares electrons.
loses two electrons.
loses one electron.
Different forms of the same element that have different properties because of different atom arrangements are called
carbons.
allotropes.
graphite.
silicons.
At room temperature, most metals are
solids.
liquids.
gases.
radioactive.
An allotrope of carbon that is hard and is often used in jewelry is
diamond.
silver.
graphite.
quartz.
Metals can be used as wire because they are
malleable.
ductile.
alloys.
shiney.
The _____ often occur in nature as uncombined elements.
alkali metals
alkaline earth metals
transition elements
actinide series
Substances that conduct an electric current only under certain conditions are most likely to be
nonmetals.
metals.
noble gases.
metalloids.
The elements in Groups 3 through 12 of the periodic table are the
lanthanides.
actinides.
noble gases.
transition elements.
A group of elements that has two electrons in its outer energy level is the
halogens.
alkaline earth metals.
actinides.
alkali metals.
Hydrogen is grouped with the alkali metals because it
has one electron in its outer energy level.
is a metal.
does not readily form compounds.
is a gas.
Synthetic elements are found in which of the following groups?
alkali metals
actinides.
halogens.
oxides.
The bonding that occurs when positively charged ions are surrounded by a cloud of electrons is called
covalent bonding.
ionic bonding.
metallic bonding.
radioactive bonding.
All synthetic elements
are needed by the human body.
are used in smoke detectors.
have more than 92 protons.
are not typically found on Earth.
The only metal that is a liquid at room temperature is
Zn.
Ag.
Na.
Hg.
A synthetic element that is used in smoke detectors is
sodium.
amercium.
aluminum.
technetium.
Bromine is the only halogen and nonmetal that is a ___________ at room temperature.
liquid
solid
semiconductor
gas
The iron triad of transition metals includes
Co, Fe, and Zn.
Co, Fe, and Ni.
Zn, Hg, and Ca.
Cu, Ag, and Au.
The ability of metals to reflect light is referred to as
ductility.
luster.
malleability.
conductivity.
Any element with an atomic number greater than 92 is a
lanthanide.
transuranium element.
halogen.
transition element.
Elements that lie along the stair-step line of the periodic table are
metals.
liquids.
radioactive.
metalloids.
Copper, silver, and gold are
radioactive metals.
diatomic metals.
coinage metals.
magnetic metals.
Three transition elements in Group 12 of the periodic table are
Hg, Zn, and Cd.
Fe, Ni, and Co.
Ne, He, and Xe.
Cu, Ag, and Au.
Hydrogen is different that the other elements in group 1 of the periodic table by
only have one electron in outer energy level.
being a gaseous material.
being highly reactive.
freezing easily.
Which elements make up more than 90% of the human body?
C
H
Na
O
What type of elements does the carbon family contain?
Exist as diatomic molecules
Metalloid
Metals
Nonmetals
What type of elements does the nitrogen family contain?
Exist as diatomic molecules
Metalloid
Metals
Nonmetals
What type of elements does the oxygen family contain?
Exist as diatomic molecules
Metalloid
Metals
Nonmetals
What type of elements does the halogens family contain?
Exist as diatomic molecules
Metalloid
Metals
Nonmetals
What type of elements does the noble gases family contain?
Exist as diatomic molecules
Metalloid
Metals
Nonmetals
How are hydrogen atoms and lithium atoms similar? Select all possible answers.
They are both in the alkali metal group.
They are both gases.
Each contains 1 electron in the outer energy level
Hydrogen has the atomic number 1 and lithium has the atomic number 6.
What are some ways synthetic elements are useful?
Some provide energy sources.
They are malleable and ductile.
Some are used in nuclear medicine.
Some are used in smoke detectors.
They are radioactive.
The elements that make up a compound and the number of atoms of each element in a unit of the compound can be shown in a
chemical formula.
superscript.
subscript.
chemical symbol.
In chemical formulas, the number of atoms in a unit of the compound is shown by numbers called
hydrates.
subscripts.
superscripts.
oxidation numbers.
When an atom loses an electron, it becomes a
neutral atom.
anion.
neutral ion.
cation.
Electrons involved in bonding between atoms are
inside the nucleus.
positively charged.
closest to the nucleus.
valence electrons.
What is the greatest number of valence electrons an atom can have?
12
3
8
2
How many hydrogen atoms are present in one molecule of ammonium acetate, NH4C2H3O2?
7
11
4
3
A group of chemical symbols and numbers that represent
the elements and the numbers of atoms of each element in a compound is
an ionic bond.
a heterogenous mixture.
a chemical formula.
a chemical structure.
Using the periodic table, which element is the most reactive?
C
Br
Ca
Na
Using the periodic table, which of the following elements is the MOST stable?
Be
Ar
Li
N
Which of the following element is the most reactive?
Mg
Al
Cl
Cs
Which element is more reactive?
Ne
Kr
Se
S
The elements that make up a compound and the number of atoms of each element in a unit of the compound can be shown in a
chemical symbol.
superscript.
subscript.
chemical formula.
How many atoms are in H20?
1
2
3
4
