8th Grade Science March Madness Week 1

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Which is a pure substance?

• 
• 
• 
• 

Why does food coloring diffuse faster in hot water vs cold water?

• Molecules are more dense allowing them to move faster

• Molecules have more energy allowing them to move faster

• The food coloring attaches to water molecules, slowing them down

• Molecules have more weight with more food coloring

Tags

NGSS.MS-PS1-4

The diagram shows the changes in state of water (H₂O). What is the process Z called?

• Condensation

• Freezing

• Vaporization

• Melting

Which state of matter is represented in the following diagram?

• Liquid

• Liquid and gas

• Gas

• Solid

Which of the following is a chemical property?

• ability to rust
• ability to conduct heat
• volume
• magnetic

Tags

NGSS.MS-PS1-2

Which of the following properties is a physical property?

• magnetism
• reaction
• flammability
• combustion

How many protons and electrons does this element have?

• 35

• 18

• 17

• 52

Tags

NGSS.MS-PS1-1

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5