Example questions:
1
Resistance is the tendency for a material to oppose the flow of electrons and is measured in:
A
Ohms
B
Watts
C
Volts
D
Amperes
E
Currents
2
What is the energy called that is derived from Earth’s internal heat?
A
Solar
B
Thermal
C
Dynamic
D
Geothermal
E
Volcanic
3
Herpetology is the scientific study of:
A
Mammals
B
Reptiles
C
Dogs
D
Diseases
E
Dinosaurs
Answers: 1:A, 2:D, 3:B
Practice Questions:
1
The outer shell of an atom is the_______ shell:
A
Electron
B
Valence
C
Ion
D
Particle
E
Proton
2
Metal alloy is an example that contains more than one substance that is not chemically bonded. Brass is a/an:
A
Solute
B
Solvent
C
Reactant
D
Mixture
E
Product
3
Dry ice, solid CO2, is an example of the following process:
A
Freezing
B
Deposition
C
Melting
D
Sublimation
E
Evaporation
4
The following chemical equation represents an acid-base reaction that produces potassium chloride, a common table salt substitute: HCl + KOH → KCl + H2O. This is an example of which type of chemical reaction?
A
Synthesis
B
Sublimation
C
Combustion
D
Oxidation
E
Neutralization
5
Which of the following examples represents a physical change?
A
Striking a match
B
Dissolving sugar in water
C
Heating sugar to make caramel
D
Rusting iron
E
Digesting food
6
A solution that exhibits very little change in pH when small amounts of acid or base are added is a/an:
A
Neutral
B
Hydroxide ion
C
Buffer
D
Absorbent
E
Vinegar
7
Which of the following types of energy operates most efficiently in a vacuum?
A
Heat
B
Radiation
C
Kinetic
D
Convection
E
Conduction
8
Which of the following waves has the highest frequency?
A
Radio waves
B
Ultraviolet
C
Infrared
D
Gamma
E
X-rays
9
Which of the following can be seen during a solar eclipse?
A
Corona
B
Vortex
C
Solar flare
D
Syzygy
E
Harvest Moon
10
Electricity is the movement of electrons through a:
A
Voltage
B
Current
C
Circuit
D
Insulator
E
Conductor
Answers:
- B (The valence shell hold electrons and signifies the atoms ability to combine or interact with another atom).
- D (A combination of two or more substances can be homogenous or heterogenous. Brass is an example of a homogenous mixture of copper and zinc).
- D (Sublimation is the process of solids becoming gas).
- E (Neutralization is the reaction of an acid with a base to form salt and water).
- B (When dissolving sugar, the form sugar changes but the sucrose, sugar molecules stay the same).
- C (A buffer can be acidic or alkaline and is not very reactant to solutions being added).
- B (Radiation does not require a medium).
- D (Gamma rays have the shortest wavelengths with the highest frequency).
- A (A corona is a gaseous envelop that surrounds a star. A halo effect can occur during a solar eclipse when the moon is blocking the sun. The corona is a ring of light around the outside of the moon).
- E (Conductors are materials that allow the movement of electricity through them).
