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WorksheetsAtoms & Molecules
Total questions: 35
Worksheet time: 39mins
The nucleus of an atom is made up of ___________________.
Protons and Neutrino
Neutrons and Electrons
Protons and Neutrons
Protons and Electrons
Which subatomic particle has a negative charge in the atom?
proton
neutron
electron
quark
ALL atoms of the same element have:
same number of proton
same number of nucleon
different number of neutron
different number of electron
What are atoms composed of?
Protons and electrons.
Protons, neutrons, and electrons.
Neutrons and electrons.
Ions, elements, and compounds.
What charge does an atom have when it GAINS electrons?
Positive
Negative
Neutral
What subatomic particle changes in an ion?
The number of electrons
The number of protons
The number of neutrons
A ______is formed when 2 atoms share electrons.
bond
ion
Atom
Cell
The relative atomic mass is the average mass of an atom for that element compared to
The mass of one mole of an element is equal to
its atomic number from the periodic table, but in amus.
its atomic mass from the periodic table, but in kilograms
its atomic mass from the periodic table, but in grams.
its atomic number from the periodic table, but in grams.
What is the molar mass of PbSO4?
303 g/mol
255 g/mol
163 g/mol
372 g/mol
How many grams are in 1.2 moles of neon?
0.059 grams
7.2 x 1023 grams
2.0 x 10-24 grams
24 grams
What is the molar mass of table salt (NaCl)? Read all options! Be careful!
58.44 amu
35.45 g/mol
22.99 g/mol
58.5 g/mol
The mass of one mole of a substance is called...
What is the molar mass of fluorine gas?
19
38
9
18
6.02 x 1023 _____.
How many moles are in 15.0 g of lithium?
104 mol
2.16 mol
6.94 mol
15.0 mol
How many grams are in 11.9 moles of chromium?
0.229g
4.37g
52.0g
619g
What is the molar mass of Oxygen?
8 grams
8 moles
15.999 grams/mol
15.999 moles
Cations have a _____________ charge.
positive
negative
neutral
Anions have a ____ charge.
positive
negative
neutral
Cations tend to be ________.
metals
nonmetals
Anions tend to be
metals
nonmetals
Identify the charge for Chlorine (Cl)
1-
1+
2-
2+
3-
Identify the charge for Oxygen (O).
1+
2+
2-
3-
3+
Identify the charge for Nitrogen (N).
1+
2+
3+
3-
2-
In ionic bonding, valence electrons are _______.
shared
transferred
destroyed
In covalent bonding, valence electrons are ______.
shared
transferred
destroyed
Ionic bonds occur between
metal and metal
metal and nonmetal
nonmetal and nonmetal
Covalent bonds occur between
metal and metal
metal and nonmetal
nonmetal and nonmetal
What type of bonding does this picture show?
Ionic
Covalent
