Grade 7 Physical Science Activities and Resources

PS.5.7.1

Explain how a small number of naturally-occurring elements can result in the large variety of substances found in the world

PS.5.7.2

Create models of common compounds:

• water
• carbon dioxide
• salt
• iron oxide
• ammonia

PS.5.7.3

Identify compounds as substances consisting of two or more elements chemically combined

PS.5.7.4

Compare and contrast properties of compounds to those of the elements that compose them:

• salt: sodium, chlorine
• water: hydrogen, oxygen
• carbon dioxide: carbon, oxygen

PS.5.7.5

Demonstrate techniques for forming and separating mixtures:

·         mixing

·         magnetic attraction

·         evaporation

·         filtration

·         chromatography

·         settling

PS.5.7.6

Classify substances as

• elements
• compounds
• mixtures

PS.5.7.7

Distinguish among solvent, solute, and solution

PS.5.7.8

Investigate the effect of variables on solubility rates

PS.5.7.9

Interpret solubility graphs

PS.5.7.10

PS.6.7.1

Compare and contrast Newton’s three laws of motion

PS.6.7.2

Conduct investigations demonstrating Newton’s first law of motion

PS.6.7.3

Demonstrate Newton’s second law of motion

PS.6.7.4

Conduct investigations of Newton’s third law of motion

PS.6.7.5

Explain how Newton’s three laws of motion apply to real world situations (e.g., sports, transportation)

PS.6.7.6

Investigate careers, scientists, and historical breakthroughs related to laws of motion

PS.7.7.1

Identify natural resources used to supply energy needs 

PS.7.7.2

Describe alternatives to the use of fossil fuels:

• solar energy
• geothermal energy
• wind
• hydroelectric power
• nuclear energy
• biomass

PS.7.7.3

Conduct investigations to

PS.7.7.4

Investigate alternative energy sources

PS.7.7.5

Investigate careers, scientists, and historical breakthroughs related to natural resources, alternative resources, electricity, and magnetism