8th Grade Content Review (Units 1 & 2)

Question 1

Which is the only metal that is not solid at room temperature?

Accepted Answer

Mercury

Question 2

Which of the following is NOT considered a "constraint" on a design?

Accepted Answer

Aesthetics

Question 3

Define matter...

Accepted Answer

Anything that takes up space and is made up of stuff, Anything that has mass and volume

Question 4

Define mass...

Accepted Answer

The amount of material an object is made up of, The amount of stuff in an object

Question 5

Which property of metals allows for them to work within a circuit?

Accepted Answer

They allow for the flow of electrons more easily, They are good conductors of electricity

Question 6

Is the following an image of an atom, element, molecule, or compound?

Accepted Answer

Element, Atom

Question 7

Which period and group can Boron be found on?

Accepted Answer

Period 2, Group 13

Question 8

What is the atomic number of Chlorine?

Accepted Answer

17

Question 9

What is the periodic table of elements?

Accepted Answer

A table on which the elements are organized by atomic number

Question 10

Why are we able to eat potassium if it is such a reactive alkali metal?

Accepted Answer

Bc its properties are altered in its digested form

Question 11

What is water displacement used for?

Accepted Answer

To find the volume of irregularly shaped objects.

Question 12

What are the metals in Group 1 of the PT called?

Accepted Answer

Alkali metals

Question 13

True or False: Copper, Silver and Gold have similar properties.

Accepted Answer

True

Question 14

What is a problem statement?

Accepted Answer

A sentence stating the engineering problem in your own words

Question 15

What is a "group" on the periodic table of elements?

Accepted Answer

The vertical columns on the PT

Question 16

Is the following image an atom, an element, a compound, or a molecule?

Accepted Answer

Element, Molecule

Question 17

What are metal wires usually surrounded by and why?

Accepted Answer

Rubber because it's a good insulator

Question 18

What is a criteria chart and why is it used?

Accepted Answer

A chart used to evaluate diff designs to choose the best one

Question 19

What must happen for electricity to work properly?

Accepted Answer

The circuit must be completely closed

Question 20

What is the atomic number of an element?

Accepted Answer

The number of electrons in the nucleus of a neutral element, The number of protons in the nucleus of an element

Question 21

Why is it important for engineers to be proficient in material properties?

Accepted Answer

So that they can create products using the proper materials, So that they can build functional products

Question 22

What is the atomic mass of an element?

Accepted Answer

the number of protons + neutrons in the nucleus of an atom

Question 23

Which two particles can be found in the nucleus of the atom, and which surrounds the atom?

Accepted Answer

Inside nucleus: protons & neutrons; outside: electrons

Question 24

Which is the only nonmetal NOT located to the right of the staircase?

Accepted Answer

Hydrogen

Question 25

What is the atomic symbol of Potassium?

Accepted Answer

K

Question 26

Which of the following are examples of alloys?

Accepted Answer

Stainless Steel, Steel, Gold Jewelry, Bronze

Question 27

What is tensile strength?

Accepted Answer

Amount if force on an object being stretched until it breaks

Question 28

Define volume...

Accepted Answer

the amount of space an object occupies

Question 29

When you close a light switch, what happens to the circuit?

Accepted Answer

It opens, preventing the flow of electrons

Question 30

What is the atomic mass of Carbon?

Accepted Answer

12 amu, 12.011 amu

Question 31

How do you find the volume of a liquid and solid, respectively?

Accepted Answer

graduated cylinder, L x W x H

Question 32

What is materials engineering?

Accepted Answer

understanding the properties of materials to improve them

Question 33

Is the following an image an atom, element, molecule or compound?

Accepted Answer

Molecule, Compound

Question 34

Which of the following is most common on the PT?

Accepted Answer

Metals

Question 35

What is an alloy and why create them?

Accepted Answer

Mixture of metals that is more useful than pure metals, Mixture of metals and non-metals that are more useful

Question 36

Is the following image an atom, element, molecule, or compound?

Accepted Answer

Compound, Molecule

Question 37

Define a period on the periodic table of elements...

Accepted Answer

the horizontal rows on the PT

Question 38

What is an atom?

Accepted Answer

smallest part of an element with the same properties as it

Question 39

Engineering is defined as...

Accepted Answer

Use of science, tech & math to make improved products

Question 40

Which of the following contains the list of criteria by which we judge engineered designs?

Accepted Answer

Fit, Function, Aesthetics, Safety, Cost, Fit, Function, Aesthetics, Safety, Environmental Impact

Question 41

Is the following image an atom, element, compound, or molecule?

Accepted Answer

Molecule, Element

Question 42

What are the 3 components of an atom?

Accepted Answer

Protons, Neutrons, Electrons

Question 43

Which of the following is NOT an SI unit measurement for mass and volume, respectively?

Accepted Answer

pound, gallon

Question 44

Where can the semi-metals, or metalloids, be found on the PT?

Accepted Answer

On the staircase, with the exception of Aluminum

Question 45

What is the engineering design process?

Accepted Answer

Steps that engineers take to get from problem to solution.

Question 46

Where does the negative charge come out from and into in a circuit, respectively?

Accepted Answer

from negative terminal to positive terminal

Question 47

Which of the following does NOT describe the proper order of the engineering design process?

Accepted Answer

Identify problem, research/brainstorm, create, test, improve

Question 48

Which of the following is NOT a property of metals?

Accepted Answer

They can react to stimuli

Question 49

What is the atomic symbol of an element?

Accepted Answer

An elements' nick-name on the periodic table, The abbreviation of an elements' name on the periodic table

Question 50

Which are the most stable/least reactive metals on the periodic table?

Accepted Answer

Noble Gases

8th Grade Content Review (Units 1 & 2)

Questions 50

8th Grade Content Review (Units 1 & 2)

Questions 50