Assignment 25600

TRUEFALSE
2 points
QUESTION 2
Magnesium would acquire a stable arrangement of electrons by bonding with one atom of which of the following elements?oxygenchlorineheliumnitrogen
3 points
QUESTION 3
The bond between hydrogen and oxygen in H2O is ionic.TRUEFALSE
2 points
QUESTION 4
Which of the following does not possess an ionic bond?BaOPCl5NaIK2O
3 points
QUESTION 5
The name for the compound CaCl2 is calcium chlorite.TRUEFALSE
2 points
QUESTION 6
The name of the compound Sr(ClO)2 is:Strontium chlorateStrontium chlorideStrontium chloriteStrontium hypochlorite
3 points
QUESTION 7
The chemical formula for barium nitride is Ba(NO3)2.TRUEFALSE
2 points
QUESTION 8
The chemical formula for potassium perchlorate is:KClOPClO3KClO4KClO2
3 points
QUESTION 9
Solid lithium chloride is an excellent conductor of electricity.TRUEFALSE
2 points
QUESTION 10
Which of the following will have the highest melting point?C6H12O6KClNH3I2
3 points
QUESTION 11
Covalent bonds exist where two atoms equally share electrons.TRUEFALSE
2 points
QUESTION 12
Which of the following represents a purely covalent bond?Ne – NeNa – NaN – NNi – O
3 points
QUESTION 13
The name of the compound, SCl6, is sulfur hexachloride.TRUEFALSE
2 points
QUESTION 14
Which of the following is the name for XeF4?Monoxenon fluorideXenon tetrafluorateXenon tetrafluoriteXenon tetrafluoride
3 points
QUESTION 15
The molecular formula for dihydrogen monoxide is H2O.TRUEFALSE
2 points
QUESTION 16
When correctly drawn, the Lewis dot structure for NH3 should have a lone pair of electrons on the central N.TRUEFALSE
2 points
QUESTION 17
Which is the first step in creating a Lewis dot structure for a molecule?Connect each outer atom to the other outer atomsPlace electrons as lone pairs on the central atomDetermine the total number of valence electrons available from all atomsShare lone pairs of electrons to complete the octet of every atom
3 points
QUESTION 18
Covalent compounds generally have high melting points.TRUEFALSE
2 points
QUESTION 19
Which of the following could create an incorrect Lewis dot structure for H2O?Showing the H atom as the central atomShowing four pairs of electrons around the O atomAdding valence electrons and core electrons into the total electrons availableBoth a and c
3 points
QUESTION 20
Covalent compounds generally have high melting points.TRUEFALSE
2 points
QUESTION 21
Which is true about covalent compounds?Have a high melting pointConduct electricity when dissolved in waterHave a low boiling pointAre extremely hard
3 points
QUESTION 22
Resonance structures exist for a compound when two (or more) Lewis structures need to be drawn to represent the compound.TRUEFALSE
2 points
QUESTION 23
Determine the number of resonance structures for the formate ion, HCO2−.234Formate ion does not possess resonance structures, as there is only one Lewis structure to describe it.
3 points
QUESTION 24
Potassium is an exception to the octet rule and can hold up to 12 electrons in its valence electron energy level in a compound.TRUEFALSE
2 points
QUESTION 25
Which of the following is not an example of an expanded octet?
3 points
QUESTION 26
When a molecule contains three bonds and a single lone pair attached to the central atom, the molecular geometry is trigonal planar.TRUEFALSE
2 points
QUESTION 27
What is the molecular geometry of ClF3?trigonal planartrigonal bipyramidalT-shapedseesaw
3 points
QUESTION 28
The molecule shown below is nonpolar. TRUEFALSE
2 points
QUESTION 29
Which of the following molecules is nonpolar?
3 points
QUESTION 30
In general, molecules that possess hydrogen bonding forces do not possess any other types of forces.TRUEFALSE
2 points
QUESTION 31
What is the main type of intermolecular force exhibited in liquid C2H6?London dispersion forceDipole-dipole forceHydrogen bonding forceIonic bonding
3 points
QUESTION 32
The reason chlorine is a gas while bromine is a liquid at room temperature is because they contain different intermolecular forces.TRUEFALSE
2 points
QUESTION 33
Which of the following liquids would boil at the lowest temperature?N2H2SH2ONH3
3 points
QUESTION 34
Carbon is a synthetic element and is not normally found in nature.TRUEFALSE
2 points
QUESTION 35
Carbon is often found in long chains composed of carbon and:calciumsodiumhydrogenfluorine
3 points
QUESTION 36
The name of the organic compound below is methanol. TRUEFALSE
2 points
QUESTION 37
The molecule contains two of which functional group?etheraldehydealcoholhydroxide
3 points
QUESTION 38
Amino acids contain the following functional group: TRUEFALSE
2 points
QUESTION 39
Phenol is an organic compound that contains which functional group?
3 points
QUESTION 40
Which of the following is not an example of a biological polymer?Amino acidHair protein, KeratinPotato starchGlycogen
3 points