Matter and Energy

The atomic number of an element is determined by the

• number of electrons in the first shell

• how reactive the element is

• number of protons in the nucleus

• placement on the periodic table

Water is matter and we know that matter cannot be created or

• identified

• destroyed

• infiltrated

• cycled

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The relationship between cellular respiration and photosynthesis is Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis.

• True

• False

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A tertiary consumer gets its nutrition by consuming

• primary and secondary consumers

• other tertiary consumers

• plants that get their energy from the sun

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A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when?

• The crystals were added to the liquid.

• The crystals dissolved in the liquid.

• The temperature of the liquid increased.

• The color of the mixture changed.

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NGSS.MS-PS1-2

Students are investigating changes from potential to kinetic energy by rolling a marble down a ramp made by propping up a plastic ruler on a book and letting it roll down. Which of the following will change the potential energy the marble starts with?

• Switching the plastic ruler with a wooden one

• Adding more books and increasing the height of the ruler

• Pushing the marble down the ramp

• Replace the marble with a rock

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Which of the following three elements are most abundant in the plants and animals that make up the biosphere?

• Sulfur, oxygen, and hydrogen

• Nitrogen, silicon, and oxygen

• Phosphorous, oxygen, and iron

• Oxygen, carbon, and hydrogen

When plants and animals interact with the atmosphere, they are exchanging which elements abundant in both the atmosphere and living things?

• Nitrogen and oxygen

• Hydrogen and calcium

• Phosphorus and carbon

• Hydrogen and oxygen

When two substances are mixed, they might form a new substance. Which of the following would indicate that a new substance has been formed?

• The temperature of the mixture decreases

• The volume of the mixture increases

• The mass of the mixture increases

• One of the substances dissolves

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NGSS.MS-PS1-2

All of the following are evidence of a chemical change EXCEPT – (6.5D)

• Change in state of matter.

• Formation of a gas.

• Color change.

• Precipitate forms.

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