The Atom
This subatomic particle has a negative charge and is found outside of the nucleus.
What is an electron?
This type of bond forms when electrons are shared between atoms.
What is a covalent bond?
A reaction in which two substances combine to form one product is called this type of reaction.
What is a synthesis (or combination) reaction?
A sample contains 36.0 g of water. This is the number of moles of water present.
What is 2.00 mol H2O?
According to the balanced equation
2 H2 + O2 → 2 H2O
4.0 moles of hydrogen gas will produce this many moles of water.
What is 4.0 moles of water?
The number of these particles determines the identity of an element.
What are protons?
Water molecules are strongly attracted to one another because of this intermolecular force.
What is hydrogen bonding?
This is the correctly balanced equation for the reaction between hydrogen gas and oxygen gas forming water.
What is 2 H2O + O2 --> 2 H2O
The molar mass of magnesium phosphate, Mg3(PO4)2, is approximately this value.
What is 262.9 g/mol?
According to the balanced equation
N2 + 3 H2 → 2 NH3
6.0 moles of hydrogen gas can produce this many moles of ammonia.
What is 4.0 moles of ammonia?
Atoms of the same element with different numbers of neutrons are called these.
What are isotopes?
Molecules with an uneven distribution of charge are described by this term.
What are polar molecules?
When silver nitrate reacts with sodium chloride, this solid product forms.
What is silver chloride, AgCl?
A sample containing 0.750 moles of carbon dioxide has this mass. Answer w/correct sig figs and units.
What is 33.0 g of CO2?
According to the balanced equation
2 Mg + O2 → 2 MgO
12.0 g of magnesium will produce approximately this mass of magnesium oxide.
What is 20.0 g of MgO?
An atom has 17 protons and 20 neutrons. This is the isotope symbol for the atom.
What is 3717Cl ?
The molecular shape for CH2O.
What is trigonal planar?
This is the net ionic equation for the reaction between barium nitrate and sodium sulfate solutions.
What is: Ba2+ + SO42- --> BaSO4 (s)?
A 172 g sample of sulfuric acid, H2SO4, contains this many moles of sulfuric acid molecules. Answer w/correct sig figs and units.
What is 1.75 mol H2SO4?
Iron reacts with oxygen gas to form iron(III) oxide. If 56.0 g of iron reacts completely, this mass of iron(III) oxide can form.
What is 80.0 g of Fe2O3?
The symbol for an atom with 16 protons and 18 electrons.
What is S2-?
The approximate bond angles in a molecule of CH2F2.
What is 109.5°?
This is the balanced equation for the complete combustion of propane (C3H8).
What is
C3H8 + 5 O2 --> 3 CO2 + 4 H2O?
A sample containing 0.250 moles of sodium chloride contains this many formula units. Answer w/correct sig figs and units.
What is 1.51 x 1023 formula units?
Aluminum reacts with chlorine gas according to the equation
2 Al + 3 Cl2 → 2 AlCl3
If 20.0 g of aluminum reacts with 40.0 g of chlorine gas, this mass of aluminum chloride will form. Answer w/correct sig figs and units.
What is 50.1 g of aluminum chloride?