Log in
Sign up for FREE
arrow_back
Library

Post Test Unit 2 - How Can I Smell Things From a Distance? [76063] (3/20/2024)

star
star
star
star
star
Last updated almost 2 years ago
17 questions
1
MS-PS1-1
1
MS-PS1-1
1
MS-PS1-1
1
MS-PS1-1
1
MS-PS1-1
1
MS-PS1-4
1
MS-PS1-2
1
MS-PS1-6
1
MS-PS1-2
1
MS-PS1-2
1
MS-PS1-6
1
MS-PS1-4
1
MS-PS1-4
1
MS-PS1-6
1
MS-PS1-4
1
MS-PS1-4
1
MS-PS1-4
Question 1
1.

An element is.....

Question 2
2.

An atom is.....

Question 3
3.

A molecule is.....

Question 4
4.

A substance is.....

Question 5
5.

A property is.....

Question 6
6.

If you could use a powerful microscope to see the particles in a gas, what would you see between the particles?

Question 7
7.

Which of the following is true about odors?

Question 8
8.

What happens to the molecules in a substance that changes from a liquid to a solid?

Question 9
9.

A ball made of an unknown substance is a solid at room temperature. A block made of a different substance is also a solid at room temperature. Their melting points would be

Question 10
10.

Oxygen, hydrogen, and water are substances. Which of these substances are elements?
[Select all that apply.] Options:
A. Oxygen
B. Hydrogen
C. Water
D. None of These

Question 11
11.

In the following models, each small dot represents a wax molecule. Which model best represents what happens when solid wax melts?

Question 12
12.

A water molecule in the gas phase is _________________ a water molecule in the solid phase.

Question 13
13.

When ammonia at 24°C is cooled to 0°C, the ammonia molecules ________________________.

Question 14
14.

A pot of water on a hot stove begins to boil rapidly, and a cold glass lid is placed on the pot. Water droplets immediately begin forming on the inside of the lid. What happened?

Question 15
15.

A student lets some of the gas escape by opening and closing the flask. Which of the following models best represents the gas that remains in the flask?

Question 16
16.

When a thermometer is heated, the red liquid inside the thermometer moves upward. This is because ___________.

Question 17
17.

When you heat a sample of gas, what happens to the particles that make up the gas?

A. the smallest particle of an element that is still that element.
C. made up of the same type of atom all the way through.
E. a particle made up of more than one atom.
E. a particle made up of more than one atom.
C. made up of the same type of atom all the way through.
D. something that is made up of either one type of atom or one type of molecule all the way through.
E. a particle made up of more than one atom.
B. a characteristic of a substance or element that is always true.
D. something that is made up of either one type of atom or one type of molecule all the way through.
E. a particle made up of more than one atom.
C. made up of the same type of atom all the way through.
B. a characteristic of a substance or element that is always true.
C. made up of the same type of atom all the way through.
B. a characteristic of a substance or element that is always true.
A. the smallest particle of an element that is still that element.
Smaller than
Lighter than
become less organized
break apart
Water from the outside leaked into the pot
Steam cooled and water molecules moved closer together
Steam combined with the air to wet the inside of the lid