JiL Chemistry - Unit 6

Binary and Ternary Compounds

100

Ternary compounds consist of ______ elements.

three

200

Most polyatomic ions are (cations, anions)

anions

300

When writing ionic formulas, the charges must balance, so that the number of electrons ________ equals the number of electrons _______.

lost (or gained) / gained (or lost)

400

Write formulas for the following sets of ions:

AL³⁺, Br^-

NH₄⁺, N^3-

What are:

AlBr₃
(NH₄)₃N

500

Write formulas for the following sets of ions: K⁺, O^2- Sr²⁺, CO₃^2-

What are: K₂O SrCO₃

Molecular Compounds

100

In molecular compounds, _________________ are used to show the number of atoms of each element per molecule.

prefixes

200

Write the prefixes for the number of atoms from 1-10:

mono-
di-
tri-
tetra-
penta-
hexa-
septa-
octa-
nona-
deca-

300

Write the formula for the following molecular compounds:

carbon tetrachloride
dinitrogen trioxide
phosphorus trichloride
carbon monoxide

CCl₄
N₂O₃
PCl₃
CO

400

Organic compounds are compounds that contain the element ________. The nature of the _____ between each pair of carbon atoms in an organic compound will determine whether the compound is saturated or unsaturated. The bonds between the carbon atoms in a(n) __________ compound are single bonds, but in a(n) __________ compound, the bonds between neighboring carbon atoms are _____ or ______ bonds.

carbon (c)
bond
saturated
unsaturated
double
triple

500

Prefixes are used to denote the number of carbon atoms present in the molecule. What are the prefixes for 1-10 carbons?

meth-
eth-
prop-
but-
pent-
hex-
hept-
oct-
non-
dec-

Alkanes and Alkenes

100

Alkanes have ______ covalent bonds with four other atoms. The name of the alkane ends in ___________.

single
"-ane"

200

Alkane general formula is:

C_nH_{(2n + 2)}

300

Name the first 3 alkanes:

Also, an alkene is a hydrocarbon with one _________ bond between two of the carbon atoms. Each alkene names ends in ______.

methane, ethane, propane

double, "-ene"

400

The general formula for an alkene is:

Draw the molecular formula for propene.

C_nH_2n C - C = C

500

Name and draw this compound: C₂H₄

Why can you not build a model of methane?

ethene

C = C

The ending "-ene" refers to a double bond between two carbons in a hydrocarbon; the prefix "meth-" means only one carbon is present in the molecule.

Video Quizzes

100

The orbital shaped like a dumb-bell is:

a. s
b. p
c. d
d. f

What is the volume of a cube if each side measures 2.0 cm?
a. 8.0 cm
b. 8.0 cm³
c. 2.0 cm
d. 6.0 cm³

b, b

200

In an ionic compound, the chemical formula represents____

a. one molecule of the compound
b. one formula unit of the compound
c. the simplest ratio of positive to negative ions in the compound
d. Both b and c

When writing the formula of an ionic compound:

a. the net charge must be zero
b. the total positive charge equals the total negative charge
c. the cation is written first followed by the anion
d. all of the above

d, d

300

Which formula correctly represents the compound formed from ions Sr²⁺ and Se^2-? a. SrSe
b. Sr₂Se₂
c. Se₂Sr₂
d. SeSr

When writing the formula of an ionic compound
a. the net charge must be zero.
b. the total + charge equals the total - charge
c. the cation is written first followed by the anion
d. ALL of the above

a, d

400

What prefix represents the number two in a molecular formula?

a. di-
b. bi-
c. tri-
d. dos-

The distinguishing feature of an alkene is that it contains:
a. all single bonds
b. a double bond
c. a triple bond
d. an ionic bond

a, b

500

Write the formula for the following:

silicon dioxide
octane
dinitrogen trisulfide
tetraphosphorus triselenide
Cn H(2n+2) is the general form for the specific group of organic compounds called _____________

SiO₂ C₈H₁₈ N₂S₃ P₄Se₃

alkanes

Grab Bag

100

Convert 14 minutes to seconds. Write your answer in scientific notation.

A strip of paper has length of 14 cm. What is the length of the stip of paper in mm? in km? Write in scientific notation.

8.4 x 10² s

1.4 x 10² mm
1.4 x 10^-4 km

200

What identifies an element?

a. the atomic number
b. the mass number
c. the atomic mass
d. the number of neutrons

In order, how many protons, electrons, and neutrons does this isotope of oxygen have? (¹⁸ ₈ O)

a. 8, 8, 18
b. 18, 18, 18
c. 8, 8, 10
d. 8, 8, 8

a

c

300

The atomic number tells the number of positively charged ____ in the nucleus. The atom is neutral because this is also the number of ______ charged ____ in the atom.

The mass number tells the total number of ____ and ____ in the nucleus of an atom.

Isotopes are atoms of the same element with different numbers of _____ which results in different ____ numbers.

protons, negatively, electrons

protons and neutrons

neutrons, mass

400

What is the formula for the following hydrocarbons?

butene
hexane
nonene

C₄H₈
C₆H₁₄
C₉H₁₈

500

Write the electron distribution and orbital notation for nitrogen.

What is 1s²2s²2p³ \/ \/ \ \ \