NEW
Font size
S
M
L
XL
WorksheetsA22-24 Review Session
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
Etching is a chemical process.
a)
True
b)
False
2.
When treating our copper waste, DILUTION chemically changed the waste.
a)
True
b)
False
3.
The process of DILUTION increased the concentration of water in our mixture and decreased the concentration of copper waste in our mixture.
a)
True
b)
False
4.
A group of the same type of atoms grouped together is called a compound.
a)
True
b)
False
5.
The equation for density is d = volume/mass.
a)
True
b)
False
6.
An atom is a smallest part of an element.
a)
True
b)
False
7.
A group of the same type of molecules grouped together is called a compound.
a)
True
b)
False
8.
A circuit board provides the energy (electricity) that each component (part) of a computer needs.
a)
True
b)
False
9.
100,000 ppm of a substance can also be expressed and 1/10.
a)
True
b)
False
10.
A mixture chemically combines elements and/or compounds together.
a)
True
b)
False
11.
In any energy event, the amount of energy remains the same.
a)
True
b)
False
12.
Mass of an object does not affect the amount of gravitational potential energy that object might have if it's placed above the ground.
a)
True
b)
False
13.
An advantage of etching circuit boards is that there is no waste produced during the etching process.
a)
True
b)
False
14.
A disadvantage of etching circuit boards is that it take an enormous amount of water to treat just a small amount of copper waste.
a)
True
b)
False
15.
Copper is the only possible metal that can be used to produce (make) circuit boards.
a)
True
b)
False
16.
Performing a serial dilution increases the amount of copper waste after etching circuit boards.
a)
True
b)
False
17.
1000 ppm of a substance mixed with water can also be expressed as a 10% solution.
a)
True
b)
False
18.
Height of an object affects the amount of gravitational potential energy that the object might have if it is paced above the ground.
a)
True
b)
False
19.
Water can be used to dilute a mixture.
a)
True
b)
False
20.
A computer is made up of only one material.
a)
True
b)
False
Reset
