Solutions Exam Review

What types of reactions will produce radiation?

• Fission

• Fusion

• Both fission and fusion

• Neither fission nor fusion

What is a fusion reaction?

• The process of splitting the nucleus of an atom

• The process of combining nuclei

• The process of changing the physical arrangement of particles

• The process of combining atoms together into a molecule

What is a fission reaction?

• The process of splitting the nucleus of an atom

• The process of combining nuclei into a larger nucleus

• The process of arranging physical particles

• The process of combining atoms together into a molecule

Nuclear fission occurs when an atom, such as uranium, releases energy when it splits when subjected to which subatomic particle?

• proton

• neutron

• electron

• positron

Which one of the following is a true statement?

• liquids do not change shape easily

• gas molecules move more slowly as they are heated

• gas molecules move around freely

• solids change shape easily

To increase the concentration of a solution, you would,

• increase the amount of solute

• increase the amount of solvent

• cool the solvent

• cool the solute

The following graph represents the amount of sugar that dissolves in 100 g of water at different temperatures.

Which of these is the best prediction of the greatest amount of sugar that will dissolve in 300 g of 30 degrees Celsius water?

• 70 g

• 220 g

• 660 g

• 1320 g

The solubility of five solid substances in water is shown in the graph. Which of the following statements is best supported by the graph?

• The solubility of most of the solids decreases at higher temperatures.

• The solubility of all the solids increases as temperatures increase.

• Some of the solids are less soluble at higher temperatures.

• All of the solids are less soluble at lower temperatures.

Which of the following procedures would increase the concentration of a solution?

• increase the amount of solvent

• increase the amount of solute

• cool the solute

• cool the solvent

You are given the choice to sweeten a glass of iced tea with a cube of sugar or a packet of sugar crystals. If your goal is to sweeten the tea as quickly as possible, you would choose--

• the cube because it has less exposed surface area and would dissolve faster

• the packet of crystals because crystals dissolve faster than a single cube

• the cube because the exothermic reaction would heat the tea and speed up the process

• either the cube or packet because both would perform identically