What is the smallest unit of an element that still has the properties of that element?

• cell

• atom

• molecule

• nucleus

Tags

NGSS.MS-PS1-1

Which statement about matter is true?

• living things are not matter

• matter is made up of atoms

• matter exists only when you can see it

• atoms are not matter

Tags

NGSS.MS-PS1-1

In what ways are atoms of oxygen most different from atoms of nitrogen?

• they have different temperatures

• they have different numbers of neutrons

• they have different numbers of protons

• they have different states of matter

The melting point of a solid is 24.9 degrees Celsius. As heat is added to melt the solid, what happens to the particles?

Group of answer choices

• the motion of the particles decreases and the distance between the particles increases

• the motion of the particles decreases and the distance between the particles decreases

• the motion of the particles increases and the distance between the particles decreases

• the motion of the particles increases and the distance between the particles increases

Tags

NGSS.MS-PS1-4

Which of the following have definite volume?

• liquids and gases

• solids and liquids

• solids and gases

• only solids

Which of the following methods will cause the molecules in a cup of water to move slower?

• swirling the water

• cooling the water

• heating the water

• stirring the water

Tags

NGSS.MS-PS1-4

What must be added to a substance to cause melting or evaporation?

• energy

• matter

• oxygen

• pressure

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Making Lemonade

Ingredients: lemons, water, sugar

1. Squeeze the juice of the lemons

2. Put the lemon juice in a pitcher

3. Fill up the pitcher with water

4. Add sugar

5. Stir

In the recipe above, what is the solution?

• sugar

• water

• lemonade

• lemon juice

You have one cup of boiling water and a bathtub full of 70 degrees water. Which, if any, has the most energy?

• the cup

• the both have the same amount of energy

• the bathtub

• none of the answers are correct

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Most substances contract when cooled because:

• the particles move slower and become farther apart

• the particles move faster and become closer together

• the particles move faster and become farther apart

• the particles move slower and become closer together

Tags

NGSS.MS-PS1-4