North Carolina Science Grade 8

Chapter 15: Chemistry and Technology

Chemistry and Technology

1.
What term measures the ease with which electrons move through a material?
A)magnetism
B)malleability
C)reactivity
D)conductivity
2.
_______ is the process by which iron is changed or weakened by a chemical reaction with oxygen and water.
A)Conduction
B)Magnetism
C)Malleability
D)Corrosion
3.
_______ is the ability of a material to be hammered or rolled into sheets.
A)Magnetism
B)Conductivity
C)Malleability
D)Density
4.
When coal and crude oil are used up, there won't be anymore available for use for _______ of years.
A)conductivity, solubility, density, magnetism, corrosion, melting point, and boiling point
B)conductivity, density, magnetism, solubility, malleability, melting point, and boiling point
C)flammability, magnetism, solubility, corrosion, melting point, boiling point
D)composite material, magnetism, density, corrosion, solubility, flammability, malleability
5.
Which is a chemical property?
A)flammability
B)density
C)hardness
D)magnetism
6.
A(n) _______ is a mixture of a metal and one or more other elements.
A)alloy
B)ceramic
C)trees
D)composite material
7.
Which of these materials is made from dried clay or claylike mixtures?
A)polymers
B)composite material
C)ceramics
D)alloy
8.
Which of the following items does not represent technology?
A)calculator
B)computer program
C)natural granite rock
D)production line in a factory
9.
Which is a social-technical system of technology?
A)cordless curling iron
B)graphing calculator
C)medical facility
D)word-processing program
10.
A(n) _______ takes scientific information or an idea and uses it to solve a problem or to mass produce a product.
A)scientist
B)doctor
C)medical technician
D)engineer
11.
Which of these professionals use his or her knowledge of chemistry to artificially duplicate normal body functions?
A)bioelectrical engineer
B)biomechanical engineer
C)biochemical engineer
D)electrical engineer
12.
A(n) _______ is someone who has knowledge about science and works to learn more information about science.
A)engineer
B)biomechanical engineer
C)scientist
D)bioelectrical engineer
13.
Why are there so many types of polymers?
A)It has a low density.
B)It has a high density.
C)It is a conductor.
D)Changing the position of the monomer in a polymer changes the properties.
14.
_______ is a branch of science that uses life science to develop new products or processes.
A)Biochemical engineering
B)Biotechnology
C)Biomechanical engineering
D)Bioelectrical engineering
15.
_______ is the process for testing procedures that are designed to find defective products or materials in a manufacturing process.
A)Production
B)Quality control
C)Preservation
D)Brainstorming
16.
Which of the following is a full-scale model upon which future products are based?
A)pilot plant
B)computer simulation
C)prototype
D)evaluation
17.
A scientist is monitoring a chemical reaction in a new product. What is used to make sure that the design, processes, and procedures work properly?
A)a pilot plant
B)a constraint
C)a prototype
D)a computer simulation
18.
What is a group problem-solving technique that involves individuals contributing ideas without criticism?
A)computer simulation
B)testing
C)marketing
D)brainstorming
19.
A(n) _______ is a digital reenactment or imitation of a process.
A)pilot plant
B)constraint
C)prototype
D)computer simulation
20.
Which of the these is not an example of a constraint?
A)cost
B)environmental impact
C)readily available materials
D)professional development
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