7th Grade Practice Fall final

What are five examples of an element?

• Water, Salt, Sugar, Sand, Air

• Hydrogen, Oxygen, Gold, Silver, Iron

• Plastic, Glass, Wood, Stone, Metal

• Carbon Dioxide, Methane, Ammonia, Ethanol, Acetone

When designing an experiment, what is a criteria?

• A random guess

• A limitation or restriction

• A standard or principle for judging

• A hypothesis

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

What is a constraint in a scientific experiment?

• A factor that can be changed

• A factor that limits the experiment

• A factor that is always constant

• A factor that is irrelevant

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

What is a molecule?

• A single atom

• A group of atoms bonded together

• A large structure made of elements

• A type of chemical reaction

Tags

NGSS.MS-PS1-1

What are the characteristics of an extended structure?

• Small and simple

• Large and complex

• Invisible and intangible

• Liquid and fluid

Tags

NGSS.MS-PS1-1

What is a chemical bond?

• A force that holds atoms together

• A type of chemical reaction

• A molecule made of polymers

• A pattern in a crystal

What type of pattern are molecules in a crystal arranged in?

• Random

• Linear

• Repeating

• Circular

Tags

NGSS.MS-PS1-1

What is a polymer made up of?

• Single atoms

• Repeating units

• Crystals

• Chemical bonds

Tags

NGSS.MS-PS1-1

What happens during a chemical reaction?

• Atoms are destroyed

• Molecules are created

• Substances change into different substances

• Energy is lost

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following are examples of a chemical reaction?

• Melting, freezing, boiling

• Rusting, burning, digestion

• Mixing, dissolving, filtering

• Cutting, bending, folding

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5