Lesson 1 SPOP Graded Warm Up

During a science lesson, Sarah argues that for something to be considered matter, it must occupy space. Alex believes that for something to be matter, it not only needs to occupy space but must also be capable of being sensed. Jamie insists that matter is anything that occupies space and has mass. While Noah claims that matter must be visible to be considered as such. Who is making the correct statement?

• Sarah

• Alex

• Jamie

• Noah

Martina is camping and needs wood for a cooking fire as well as shelter. She gathers a variety of logs and branches from the surrounding area. She chops and shapes some of the larger pieces of wood into uniform shapes to build her shelter. What kind of change is taking place as the wood is chopped?

• a change in matter
• a change in physical property
• a change in substance
• a change in chemical property

From the previous question, Martina burns some of the smaller twigs and branches to start a fire in order to cook her dinner. Burning wood is an example of change in a _____________ property.

• chemical
• physical
• scientific
• matter

Air Purifiers are recommended to use in homes because there are a great deal of different components in air. Because of all of these parts of air, air is considered a _________

• compound
• mixture
• molecule
• element

What type of mixture would a chex mix that has pretzels, chex, and nuts in it?

• Heterogeneous
• Homogeneous

Particles in all matter are always moving. They move at different speeds depending on what phase the matter is in. Which phase has the LEAST amount of kinetic energy based on the speed that the particles are moving?

• liquid
• gas
• solid

The chemical equation for water is H20. What does that make water?

• an element
• an atom
• a compound
• a molecule and a compound

Density is a ___________ property of a substance.

• chemical
• physical

True/False: The amount of a substance determines its density.

• True
• False

Photosynthesis is a _________ change in plants.

• chemical
• physical