NGSS Review

Based on the Law of the Conservation of Mass, which of the following statements is true in a chemical reaction?

• The mass of the reactants is the same as the mass of the products.

• The mass of the reactants is more than the mass of the products.

• The mass of the reactants is less than the mass of the products.

• The reactants and products do not change at all.

Tags

NGSS.MS-PS1-5

Metals and non-metals have distinct physical properties. Which of the following is a property of non-metals but not a property of metals?

• brittle

• ductile

• malleable

• conductive

Which substance cannot be broken down into simpler substance?

• tap water

• gold

• vinaigrette dressing

• sweet tea

Tags

NGSS.MS-PS1-5

A variety of substances were tested. The coffee tested was found to have a pH of 5.9. Based on the information below, which of the following categories would coffee be placed into?

pH 0 - 6 - acidic (pH 0 is highly acidic)

pH 7 - Neutral (water)

pH 8 - 14 - base (pH 14 is highly basic)

• strong acid

• weak acid

• strong base

• slightly neutral

Design a model to demonstrate how Earth's systems (geosphere, hydrosphere, atmosphere, and biosphere) interact to affect climate. Explain the role of each system in your model.

• Focus only on the atmosphere and its gases, ignoring interactions with other systems.

• Show how volcanic activity (geosphere) affects atmospheric conditions and influences ocean currents (hydrosphere).

• Model only the biosphere's impact on the atmosphere through carbon dioxide production.

• Isolate the hydrosphere and examine its effects without interaction with other systems.

Tags

DOK Level 3: Strategic Thinking

The air we breathe is a combination of gases and water vapor that are not chemically combined. Although nitrogen makes up most of our atmosphere, the oxygen in the air allows land animals to survive, while plants rely on carbon dioxide to make their own food through photosynthesis. Which term correctly describes the air that we inhale every time we take a breath?

• pure substance

• mixture

• compound

• molecule

Anna lit a candle during a power outage. She noticed that the wick burned, and the wax melted. She also noticed that the candle changed shape, and the air around it was warm. Which of the following changes that she observed was a chemical change?

• Melting wax

• Change of shape

• Burning wick

• Heated air

Tags

NGSS.MS-PS1-2

Laura and Maddie wne swimming at the beach. In the distance they saw a man jet skiing. When they went under water the sound of the jet ski was remarkably louder. What explains why the jet ski seemed louder underwater?

• The jet ski changed position.

• Their hearing was better underwater.

• The frequency of the sound waves increased underwater.

• Sound waves travel faster through liquids than through gases.

Tags

NGSS.MS-PS4-2

Sound is energy that travels through matter as vibrations. The arrangement of the particles in matter, known as a medium, affect the speed that sound waves can travel through that medium. Which of these represent the correct order that sound would travel through these different mediums from fastest to slowest?

• air, water, steel

• water, air, steel

• steel, water, air

• steel, air, water

Tags

NGSS.MS-PS4-2

Which of the units below is most complex?

• cells

• organs

• tissue

• body systems

Tags

NGSS.MS-LS1-3