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52 Cards in this Set

  • Front
  • Back
What occurs in an ionic bond?
Oppositely charged ions attract.
What is the net charge of the ionic compound calcium fluoride?
0
What is the basis of a metallic bond?
the attraction of metal ions to mobile electrons
How many valence electrons does a helium atom have?
2
How many valence electrons does a helium atom have?
5
What pairs of elements is most likely to form an ionic compound?
magnesium and fluorine
What covalent bonds are most polar?
H---N
How many valence electrons are in a silicon atom?
4
An ionic bond is a bond between __________.
a cation and an anion
What is the charge on the cation in the ionic compound sodium sulfide?
1+
What particles are free to drift in metals?
electrons
What is the name given to the electrons in the highest occupied energy level of an atom?
valence electrons
According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as possible?
pairs of valence electrons
How many valence electrons are in an atom of magnesium?
2
A bond fromed between a silicon atom and an oxygen atom is likely to be
ionic
What is the charge on the strontium ion?
2+
What element does not exist as a diatomic molecule?
Ne
a chemical equation that does not indicate relative amounts of reactants and products
skeleton equation
a new substance formed in a chemical reaction
product
a starting substance in a chemical reaction
reactant
a concise representation of a chemical reaction
chemical equation
an equation in which each side has the same number of atoms of each element
balanced equation
a reaction in which a single compound is broken down into simpler substances
decomposition reaction
a reaction in which oxygen reacts with another substance, often producing heat or light
combustion reaction
a list of metals in order of decreasing reactivity
activity series of metals
Which of the following elements is in the same period as phosphorus?
magnesium
The modern periodic table is arranged in order of increasing atomic _________.
number
Who arranged the elements according the atomic mass and used the arrangement to predict the properties of missing elements?
Dmitri Mendeleev
Which of the following categories includes the majority of the elements?
metals
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Kr
To what category of elements does an element belong if it is a poor conductor of electricity?
nonmetals
The atomic number of an element is the total number of which particles in the nucleus?
protons
Which of the following elements is a transition metal?
copper
What is the charge of a cation?
a positive charge
What type of ions have names ending in -ide?
only anions
How are chemical formulas of binary ionic compounds generally written?
cation on left, anion on right
Sulfur hexafluoride is an example of a
binary compound
What is the ending for the names of all binary compounds, both ionic and molecular?
-ide
Binary molucular compounds are made of two__________.
nonmetallic elements
Which of the following correctly shows a prefix used in naming binary molecular compounds with its corresponding number?
nona-,9
Chemical reactions
produce new substances
Chemical equations
describe chemical reactions
Symbols used in equations, together with the explanations of the symbols, are shown below. Which set is correct?
(aq), dissolved in water
What is the formula for sodium sulfate?
A:
What is the charge on the cation in the ionic compound sodium sulfide?
1+
What particles are free to drift in metals?
electrons
What is the name given to the electrons in the highest occupied energy level of an atom?
valence electrons
According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as possible?
pairs of valence electrons
How many valence electrons are in an atom of magnesium?
2
A bond fromed between a silicon atom and an oxygen atom is likely to be
ionic
What is the charge on the strontium ion?
2+
?
A: