WorksheetsANO Basic Chemistry
Total questions: 42
Worksheet time: 21mins
Argon (Ar) is located in which chemical series of the periodic table?
Metalloids
Halogens
Noble Gases
Actinides
which of the following is considered an alkali metal?
Pb (lead)
B (Boron)
Kr (Krypton)
Na (Sodium)
Which of the following is NOT considered a "common state" of matter?
liquid
plasma
solid
gas
the different states of matter can be broken down into fundamental units called.....
neutrons
moles
molecules
atoms
True or False:
Every atom has two regions known as the nucleus and the electron cloud.
True
False
Protons have the same mass as the....
electron
nucleus
neutrons
atom
True or False:
The nucleus has a negative charge.
True
False
How do the electrons orbit the nucleus?
Like the planets orbit the sun
They move in clouds or orbitals
They do not orbit the nucleus
Atoms are classified chemically by the ........
Atomic weight
number of electrons
number of neutrons
Atomic Number (Z)
The Atomic Number (Z) of an atom is the number of ___________.
Protons
Electrons
Orbitals
Shells
The number of protons plus the number of neutrons is call the ......
Atomic Number (Z)
Mass Number (A)
Atomic weight
What is the atomic number for Oxygen?
10
6
8
4
How man neutrons are in Phosphorus-31?
15
12
16
10
What are the units for atomic weight?
AMU (atomic mass units)
molarity (moles per liter)
kilograms (kg)
The average of all the naturally occurring isotopes of that element is called the ____________.
Mass number
Atomic
Atomic number
Atomic mass
What is the molecular weight of H2SO4?
82 amu
98 amu
96 amu
68 amu
True or False:
Molecules are groups or clusters of atoms held together by means of chemical bonding.
True
False
What is "molecular weight"?
the total weight of the individual atoms of a molecule
the total weight of the protons and electrons
the weight of the protons
none of the above
What is the value for Avogadro's Number?
6.02 x 1023
6.02 x 1015
6.02 x 1010
True or False:
Avogadro's Number in atoms is = 1 mole.
True
False
At standard temperature and pressure, 1 mole of gas occupies what volume?
25.1 L
30.5 L
22.4 L
52.6 L
Molar Mass, Formula Weight, Formula Mass, Gram Atomic Weight (GAW), Gram Molecular Weight (GMW) are all expressed in what units?
amu
grams
liters
Physical properties of elements on the periodic table are repeated periodically in what direction on the table?
vertically
horizontally
diagonal
A horizontal row on the periodical table is called a _________?
group
family
period
True or False:
Valence is defined as the number of protons an element gains or loses.
True
False
True or False:
Metals are good conductors of heat and electricity.
True
False
How many valence electrons are in alkali metals?
1
2
3
4
Alkaline Earth Metals have how many valence electrons?
1
2
3
4
True or False:
Transitions Metals are good catalysts.
True
False
Noble Gases have _________ valence electrons.
5
4
6
8
The maximum number of electrons in the p orbital is________.
14
10
6
2
True or False:
An Ionic Bond is formed when one or more electrons is wholly transferred from one element to another and the elements are held together by the force of attraction due to the opposing charges.
True
False
Ionic compounds form solid crystals at ____________ temperatures.
high
low
ordinary
True or False:
Covalent bonds only pair off with one electron from another atom.
True
False
What type of bonding occurs when the shared pair of electrons is not shared equally, one end of the bond is positive and the other is negative.
Dipole-Dipole Attraction
Non polar Covalent Bond
Polar Covalent Bonding
What type of bonding occurs from the attraction between metal cations and the surrounding sea of electrons?
Metallic Bonding
Ionic Bonding
Polar Covalent Bonding
Which of the following best describes the Law of Conservation of Mass?
Total mass of the products equals the total mass of the reactants
Total mass of the products does not equal the total mass of the reactants
None of the above
True or False:
A solution is a homogeneous mixture of two or more substances.
True
False
The substance that dissolves in the solution is called the __________.
Solvent
Solute
Mixture
The number of equivalents of solute dissolved in one liter of solutions is called the ......
Atomic Weight
Molarity
Normality
Balance the following equation:
TiCl4 + 2H2O ----- TiO2 +______HCL
2
4
1
6
True or False:
Bases are substances that produce hydroxide ions in water solutions.
True
False
