Mississippi Science Review

The table shows the number of neutrons, protons, and electrons for two atoms. How are the two atoms alike?

• They have the same charge.

• They have the same mass number.

• They have the same atomic number

• They are atoms of the same element.

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NGSS.MS-PS1-1

Elements with seven valence electrons —

• are highly reactive

• are highly stable

• have a high mass

• have a low mass

How many of each atom are in the compound above?

• 1 magnesium atom, 2 iron atoms, and 4 oxygen atoms

• 3 magnesium atoms, 2 iron atoms, and 4 oxygen atoms

• 6 magnesium atoms, 6 iron atoms, and 12 oxygen atoms

• 3 magnesium atoms, 6 iron atoms, and 12 oxygen atoms

Tags

NGSS.MS-PS1-1

Look at the pictures above. A shows the bag before the vinegar and baking soda are mixed together, and B shows it after they are mixed together. In which picture do the contents of the bag have the greater mass?

• The mass is greater in A—before they are mixed.

• The mass is greater in B—after they are mixed.

• The mass is the same in both.

• The mass depends on the temperature.

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NGSS.MS-PS1-5

Which of the following is the best clue that a chemical reaction has taken place?

• Change in color

• Change in state

• Change in particle size

• Change in volume

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NGSS.MS-PS1-2

What two things led to mass extinctions throughout the earth's history?

• gradual changes and catastrophic events

• earthquakes and volcanoes

• over hunting and natural disasters

• pollution and space exploration

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What type of rock forms near volcanoes?

• all types of rocks

• metamorphic

• igneous

• sedimentary

How can you test to see if an electromagnet is stronger after adding more coils of wire?

• if it picks up fewer paperclips

• compass still points toward the electromagnet when moved further away

• if it picks up the same number of paperclips

• compass still points toward the electromagnet when moved closer

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Short wave length equals ______ frequency.

• low

• regular

• medium

• high

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NGSS.HS-PS4-1

What is the primary function of chlorophyll in plants?

• A) Absorb sunlight for photosynthesis

• B) Provide structural support

• C) Store nutrients

• D) Repel insects

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NGSS.MS-LS1-6

NGSS.MS-LS2-3