Unit 3/4 Question Preview (ID: 62417)
Nuclear Reactions And Solubility.
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Which of the following best describes the process that takes place in the sun's core?
a) Fusion
b) Fission
c) Ionization
d) Radiation
Which statement best describes a solubility curve?
a) It shows the relationship between pressure and solubility.
b) It shows the relationship between solubility and gas concentration.
c) It shows the relationship between temperature and solubility.
d) It shows the relationship between volume and solubility.
An Isotope has a different number of:
a) elements
b) protons
c) electrons
d) neutrons
Which one means to stick to particles of the SAME substance
a) adhesion
b) cohesion
c) mixture
d) dissolving
which procedure would NOT increase the concentration of a solution?
a) decrease the amount of solvent
b) warm the solvent
c) stirring
d) decrease the amount of solute
When a second packet of flavor was added to the ramen, the flavor did not dissolve. What can be determined about the soup BEFORE the second packet was added
a) the solution was supersaturated
b) the solution was hypersaturated
c) the solution was saturated
d) the solution was unsaturated
Which choice describes a property of water as a universal solvent
a) polar and no overall charge
b) polar with a slight overall charge
c) nonpolar and no overall charge
d) nonpolar with a slight overall charge
Which types of molecules dissolve in water
a) nonpolar molecules
b) polar molecules
c) all molecules
d) most solids
What is a fission reaction?
a) the process of combining nuclei to form a larger nucleus
b) the process of rearranging particles
c) the process of splitting the nucleus of the atom
d) the process of destroying or creating new molecules
What is needed in order to produce a nuclear fusion reaction?
a) Extremely high pressure
b) Extremely high temperatures
c) Extremely low pressure
d) Extremely low temperatures
Which is NOT a way to increase the rate of dissolving in a solution?
a) stirring
b) increasing surface area
c) heating
d) cooling
Which choice is the definition of reactant?
a) the starting substance, everything before the arrow
b) the resulting substance, everything after the arrow
c) the largest substance
d) the smallest substance
What does it mean if a solution is subsaturated
a) when a solvent has more solute dissolved in it than it can hold
b) when a solvent has no solute in it
c) when a solvent has dissolved a solute but the limit of how much can be dissolved has not been reached
d) when a solvent has the maximum amount of solute dissolved in it
5 spoons of sugar are stirred into 8 cups of tea. In this solution, water would be the:
a) solvent
b) solute
c) saline
d) base
Which term describes the substances present at the start of a chemical reaction?
a) Catalyst
b) Endotherm
c) Byproduct
d) Reactant
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