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

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An element is.....

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.

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.

An atom is.....

B. a characteristic of a substance or element that is always true.

A. the smallest particle of an element that is still that element.

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.

A molecule is.....

C. made up of the same type of atom all the way through.

A. the smallest particle of an element that is still that element.

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.

A substance is.....

D. something that is made up of one type of molecule all the way through. 

A. the smallest particle of an element that is still that element.

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.

A property is.....

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.

A. the smallest particle of an element that is still that element.

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

Liquid

More particles

Empty space

Air

Which of the following is true about odors?

All odors are made up of particles

Odors move in all directions

Odors can be detected

All of the above

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

The molecules slow down

The molecules shrink

The molecules expand

The molecules speed up

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

the same because they are made of the same types of atoms.

different because they are made up of different molecules.

the same because they are both solids at room temperature.

different because they have different shapes.

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

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

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

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

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?

The lid started to sweat

Hydrogen and oxygen combined to form water

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

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?

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

the glass of the thermometer gets hot

the red liquid is thin

hot liquid is lighter

the molecules of the liquid move faster and move further apart

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

The particles move faster

The particles will become denser

The particles will break apart

The particles will get smaller

An element is.....

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.

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.

An atom is.....

B. a characteristic of a substance or element that is always true.

A. the smallest particle of an element that is still that element.

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.

A molecule is.....

C. made up of the same type of atom all the way through.

A. the smallest particle of an element that is still that element.

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.

A substance is.....

D. something that is made up of one type of molecule all the way through. 

A. the smallest particle of an element that is still that element.

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.

A property is.....

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.

A. the smallest particle of an element that is still that element.

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

Liquid

More particles

Empty space

Air

Which of the following is true about odors?

All odors are made up of particles

Odors move in all directions

Odors can be detected

All of the above

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

The molecules slow down

The molecules shrink

The molecules expand

The molecules speed up

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

the same because they are made of the same types of atoms.

different because they are made up of different molecules.

the same because they are both solids at room temperature.

different because they have different shapes.

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

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

Larger than

Heavier than

The same as

Smaller than

Lighter than

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

move faster

move slower

stop moving

become less organized

break apart

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?

The lid started to sweat

Hydrogen and oxygen combined to form water

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

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?

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

the glass of the thermometer gets hot

the red liquid is thin

hot liquid is lighter

the molecules of the liquid move faster and move further apart

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

The particles move faster

The particles will become denser

The particles will break apart

The particles will get smaller

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

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

Oxygen, hydrogen, and water are substances. Which of these substances are elements? [Select all that apply.] Options: A. OxygenB. HydrogenC. WaterD. None of These

An element is.....

An atom is.....

A molecule is.....

A substance is.....

A property is.....

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

Which of the following is true about odors?

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

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

Oxygen, hydrogen, and water are substances. Which of these substances are elements? [Select all that apply.] Options: A. OxygenB. HydrogenC. WaterD. None of These

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

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

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

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?

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?

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

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

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

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