Chapter 9-Part II Question Preview (ID: 28538)


Carbon Chemistry. TEACHERS: click here for quick copy question ID numbers.

When amino acids are linked together, the molecule formed is a
a) carbohydrates
b) lipid
c) protein
d) polyalcohol

All organic compounds contain
a) nitrogen
b) carbon
c) oxygen
d) hydrogen

Which of these statements is true of saturated hydrocarbons?
a) They contain one carbon to carbon double bond.
b) They have at least one carbon to carbon double bond.
c) They have one or more carbon to carbon triple bonds.
d) They contain only single bonds.

Organic compounds ___________________.
a) cannot be made in the laboratory
b) occur in living organisms
c) all contain hydrogen
d) all contain amino acids

When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
a) an alcohol
b) an amine
c) a carboxylic acid
d) a polymer

A carboxyl group is made up of ____________________.
a) one nitrogen atom and two hydrogen atoms
b) one hydrogen atom, two oxygen atoms, and one carbon atom
c) one hydrogen atom and two carbon atoms
d) one carbon atom, one oxygen atom, and one hydrogen atom

Sugars and starches are ______________________.
a) lipids
b) proteins
c) hydrocarbons
d) carbohydrates

When both -NH2 and -COOH replace hydrogen atoms on the same carbon atom, a(n) _____________ is formed.
a) amine
b) amino acid
c) carboxylic acid
d) carbohydrate

The short chain hydrocarbons methane, ethane, and propane are useful as fuel because they _____________.
a) have high boiling points
b) do not readily evaporate
c) form solids at room temperature
d) evaporate and burn easily

Which of the following is NOT a polymer?
a) starch
b) protein
c) glucose
d) cellulose

Which of the following will cause a greater amount of oxygen to dissolve in 100 g of water?
a) heat the water
b) decrease the oxygen gas pressure
c) increase the oxygen gas pressure
d) all of the above

The atmosphere of the earth is an example of a ___________________ solution.
a) liquid-liquid
b) gas-liquid
c) gas-gas
d) solid-liquid

The amount of table sugar that will dissolve in 1 kg of water can be increased by ___________________.
a) stirring the solution
b) heating the solution
c) breaking the sugar into smaller pieces
d) doing any of the above

Which of the following changes gives NO evidence that a chemical reaction has taken place?
a) a nonpolar molecule like cholesterol
b) a polar molecule like ethyl alcohol
c) an ionic compound, such as magnesium chloride
d) a polar molecule like the fruit sugar, fructose

Which of the following types of substance would be least likely to dissolve in water?
a) a cube of solid forms a puddle of liquid
b) a certain liquid is added to a solid, and bubbles of gas form
c) two liquids are mixed, and a precipitate froms
d) heating a blue solid turns the solid white

Which of the following changes is chemical rather than physical?
a) water is boiled
b) aluminum foil is crumpled
c) glass is shattered
d) wood is burned

A solution that contains a large amount of solute compared to solvent is described as ___________________ .
a) dilute
b) heterogeneous
c) unsaturated
d) concentrated

Which one of the following factors would not speed up a chemical reaction?
a) a log, two feet in diameter
b) two logs, each one foot in diameter
c) a pile of small splinters made from a two-foot diameter log
d) both logs and the splinters will burn at the same rate

Which of the following materials will burn the fastest in open air?
a) increasing the concentration of a reactant
b) adding a catalyst
c) raising the temperature
d) making the reactant particles larger

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