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