AnswersEA ACADEMY PHYSICAL SCIENCE SPRINGUnit Test

Unit Test — Unit test Answers

15 verified answers2 views
21
Free Preview

Justin is an artist using a hammer to make a large, thick statue out of tin. Which property of tin allows Justin to make an interesting shape?

A
shininess
B
malleability
C
ductility
D
conductivity
22
Free Preview

What is a limitation of using a chemical formula, such as C6H12O6, to represent a compound?

A
The chemical formula does not show the types of elements that make up the compound.
B
The chemical formula does not show how the atoms are connected to one another.
C
The chemical formula does not show the number of atoms of each element in a molecule.
D
The chemical formula does not show the chemical symbols of the elements in the compound.
23

By which process does water vapor become a cloud?

A
evaporation
B
transpiration
C
condensation
D
precipitation
24

Giovanni created this chart to study for an exam.Which best describes how to correct the error in the chart?

Question illustration
A
Remove “plastics” from the uses for sodium hydroxide.
B
Swap the uses for iron oxide and calcium carbonate.
C
Change the use for calcium chloride to “used in preservatives.”
D
Add “de-ice roads” to uses for calcium carbonate.
25

Lionel has a hot plate, a thermometer, a container of water, a spoon, and a small hammer. Using these tools, Lionel can test several properties of an ionic compound.Which property of the compound will he not be able to test?

A
atomic structure
B
melting point
C
ability to dissolve
D
brittleness
26

Which is the only element in group 1 on the periodic table that forms covalent bonds?

A
hydrogen
B
lithium
C
potassium
D
sodium
27

Which is the only element in group 1 on the periodic table that forms covalent bonds?

A
hydrogen
B
lithium
C
potassium
D
sodium
28

Formaldehyde is an organic compound. Each molecule includes two hydrogen (H) atoms, one oxygen (O) atom, and one carbon (C) atom. Below are the dot structures for each of these elements.Which diagram shows how the covalent bonds most likely form in a formaldehyde molecule?

Question illustration
A
Option
B
Option
C
Option
D
Option
29

The element sulfur (S) is most likely to form covalent bonds with the element

A
helium (He).
B
magnesium (Mg).
C
zinc (Zn).
D
oxygen (O).
30

How many atoms of each element are in the chemical formula NH4NO3?

A
1 nitrogen, 1 hydrogen, and 3 oxygen
B
1 nitrogen, 4 hydrogen, and 3 oxygen
C
2 nitrogen, 4 hydrogen, and 3 oxygen
D
5 nitrogen, 1 hydrogen, and 1 oxygen
31

Suna passes an electric current through a sample of clear, colorless, and odorless liquid. As the experiment continues, bubbles form, and the volume of liquid decreases. Suna collects samples of two colorless, odorless gases that bubble out of the liquid. One of the gases burns. Neither the original liquid nor the other gas burns.Which is the best explanation of her results?

A
The electric current changed some of the sample to gas even though the sample was not breaking down. Therefore, the original liquid is a compound.
B
The electric current released a gas that was odorless and colorless, like the original sample. Therefore, the original liquid is an element.
C
The sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound.
D
The sample lost some of its volume, but the gas still had the same chemical makeup as the original sample. Therefore, the original liquid is an element.

Did you find these answers helpful?

More from this Course

Assignment
22 verified answers

Introduction to Chemical Reactions

Quiz
14 verified answers

Introduction to Chemical Reactions

Quiz
39 verified answers

Introduction to Chemical Reactions

Unit Test — Unit test Answers — EA ACADEMY…