Physical Science Bonding and Chemical Formulas Unit 4 & 5
Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. What is the formula?
KMnO4
What is the name of PCl3?
Phosphorus TriChloride
A covalent bond is a shared pair of electrons.
True
What is the number of oxygen atoms is Al2(SO4)3
12
What is the formula weight of methane, CH4?
16.01
What is the mass percentage compositon of Baking Soda - NaHCO3
27.4 Na; 1.2 H; 14.3 C; 57.1 O
Which of the following chemical reactions is a COMBINATION REACTION?
2H2 + O2 -> 2H2O
Which of the following chemical reactions is a DECOMPOSITION REACTION?
2HgO -> 2Hg + O2
What is the mass percentage composition of Boric Acid - H3BO3?
4.85 H; 17.5 B; 77.7 O
What is the mass percent of sodium in washing soda, Na2CO3?
43.4%
What is the mass percent of sodium in washing soda? Na2CO3
43.4%
What is the mass percentage composition of Aspirin - C9H8O4?
60 C; 4.4 H, 35.6 O
When the Equation ___ Li + ___ O2 > ___ Li2O is correctly balanced what is the sum of the coefficients
7
The formula weight of aluminum hydroxide Al(OH)3
78u
What is the formula weight of aluminum hydroxide Al(OH)3?
78u
Evidence from a chemical reaction includes:
A color change, a change in temperature, and the production of a gas - D. All of the above.
Which of the following is a sign of an ion exchange reaction?
A precipitate is formed
The formation of an ionic bond
A. involves a transfer of one or more electrons B. results in a release of energy C. helps atoms C achieve noble gas electron management ***D. All of the Above *
Which of the following chemical reactions is a REPLACEMENT REACTION?
Al + 3CuCl -> AlCl3 + 3Cu
The correct name for NH4NO3 is
Ammonium Nitrate
Correct name for Ba(OH)2 is
Barium Hydroxide
In the equation carbon + oxygen -> carbon dioxide the PRODUCT is
CARBON DIOXIDE
2Na (s) + Cl2 (g) .> 2NaCl (s) + 2NaCl (s)
COMBINATION
CaO (s) + H2O (l) > Ca(OH)2
COMBINATION
The reaction 2Mg + O2 > 2MgO is an example of
COMPOSITION
What is the formala for the ionic compound formed by calcium ions and nitrate ions?
Ca(NO3)2
Which of the following formulas of ionic compounds is the least likley to be correct?
Ca2NO3
Which one in not ionic?
Ca2NO3 Sodium Carbonate
The formula for calcium phospate is
Ca3(PO4)2
What is the formula for Calcium Phosphate
Ca3(PO4)2
What is the formula for the ionic compound formed by calcium and selenium?
CaSe
What is the correct name for the ionic compound. CaF2?
Calcium Flouride
The stock system name for CrSO3 is
Chromium (II) Sulfite
The stock system name for Cr2O3 is
Chromium (III) Oxide
The stock system name for CrO3 is
Chromium (VI) Oxide
A chemical reaction is balanced by changing
Coefficients
H2O (l) + CO2 (g) > H2CO3 (l)
Combination
What is the correc tname for the compound, CuCl2?
Copper (II) Chloride
What is the correct name for the compound., CuCl2
Copper (II) Chloride
What type of chemical bonds does the sharing of a pair of electrons form
Covalent
What is the correct formula for Copper (II) Phosphate?
Cu3(PO4)2
2NaHCO3 > Na2CO3 (s) + H2O (g) + CO2 (g)
DECOMPOSITION
The reaction: Potassium chlorate > Potassium chlorate + Oxygen gas is an example of
DECOMPOSITION
Atoms gain and lose electrons in chemical reactions in order to increase their energy state.
False
Ionic Bonds occur between atoms from adjacent groups.
False
The subscript "2" in Mg(OH)2 tells you that the charge of the hydroxide ion is (-2)
False
The sum of the coefficients must be the same on both sides of a chemical equation?
False
The sum of the coefficients must be the same on both sides of the equation?
False
When balancing a chemical equation, you need to change subscripts to make the number of atoms of an element the same on both sides of the equation>
False
What is the balanced equation for a reaction between iron and sodium chloride?
Fe + 2NaCl -> FeCl2 + 2 Na
The chemical formula for Iron (II) nitrate is
Fe(NO3)2
What is the mass percentage composition of the elements in the following compound?
Fool's Gold - FeS2 is 46.6 Fe 53.4 S
Which of the following is the formula for Hydrobromic Acid?
HBr
Which of the following chemical reactions is an ION EXCHANGE reaction?
HCl + NaOH -> NaCl + H2O
The Chemical name for ClO3 is "Chlorate Ion" = What is the common name ofr HCl3?
Hydrochlloric Acid
NaCl (aq) + AgNO3 (aq) > NaNO3 (aq) + AgCl
ION EXCHANGE
The reaction between water solutions of sodium chloride and silver nitrate produces a precipitate: NaCl + AgNO3 > NaNO3 + AgCl is an example of
ION EXCHANGE
Atoms from an element in group IIA are allowed to react with atoms with atoms from an element in group VIIA. What type of compound is likely to form?
IONIC
What is the formula when hypothetical atoms of M and X react to form a stable ionic compound?
MX3
What is the name of Mn(CO3)2?
Manganese (IV) Carbonate
The stock system name for Mn2O7 is
Manganese (VII) Oxide
In replacement reactions, metals are usually replaced by
Metals
What is the formula for the ionic compound formed by magnesium and iodine
MgI2
The formula for mangesium sulfate is
MgSO4
The formula for sodium sulfide is
Na2S
What happens if a precipitate, gas, or water DO NOT form when attempoting an ion exchange reaction?
No ions have been removed, so no reaction has taken place.
Atoms from an element in group VA are allowed to react with atoms from an element in group VIIIA. What type of compound is likely to form?
None of the above
What is the correct formula for Lead (IV) Chloride?
PbCl4
What is the formula for lead (II) Oxide?
PbO
The equation 2NaI + CI2 > 2NaCl + I2 is an example of
REPLACEMENT
Cu (s) + 2AgNO3 (aq) > Cu(NO3) (aq) > Cu(NO3)2 (aq) + 2Ag (s)
Replacement
What is the name of P4Se3?
Tetraphosphorus Triselenide
In a chemical equation, the reactants are found on the left side of the arrow.
True
The breaking and making of chemical bonds can explain chemical reactions and energy flow.
True
Consistent with Vanadium being a transition metal, the name for VSO4 should be
Vanadium II Sulfate
Atoms that have 8 valence electrons would tend to
be inert.
In the equation carbon + oxygen -> carbon dioxide the REACTANT is
carbon and oxygen
The stock system name for As2S5 is
diArsenic Pentasulfide
the formation of an ionic bond
involves a transfer of one or electrons, results in a release of energy, helps atom achieve a noble gas electron arrangement. D. All the above.
In an ionic compound the metal
is written first
Which combination of elements results in the formation of a white crystalline solid that dissolves to form a solution that conducts electricity?
metal and non metal
The smallest unit of a covalent compound that still retains the properties of the compound is called a
molecule
The formation of a positive ion
occurs when an electron is removed from an atom.
Consider the electron dot diagram of the unknown element X: This atom would most likely:
react with hydrogen to form H2X
In an acid base reaction, water and a
salt.
Because of our belief in the law of conservation of mass, it seems reasonable that
the number of atoms of reactions must equal the number of atoms for products
When balancing a chemical reaction the number of H atoms is 2CH4 is 8?
true
Ionic Compounds are generally
white, crystalline solids