8th grade Science NC EOG Review KG - University Quiz

8th grade Science NC EOG Review

Assessment

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Deleted User

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Chemistry, Biology, Other Sciences

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KG - University

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2K plays

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Medium

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80 questions

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Multiple Choice

1 min

1 pt

A student is asked to categorize the following items as elements, compounds, or mixtures: copper wire, salt, aluminum foil, baking soda, a piece of granite, and sugar water. He lists ELEMENTS as copper wire, aluminum foil, and baking soda; COMPOUNDS as salt; MIXTURES as the piece of granite and sugar water. Which is in the wrong category?

copper wire

sugar water

baking soda

salt

Multiple Choice

1 min

1 pt

Why is water classified as a compound?

Because it is an element, which consists of only one type of atom.

Because it is a substance, which can easily be separated.

Because it is a substance composed of two or more kinds of atoms bonded together.

Because it is an unevenly mixed solution, or a heterogeneous mixture.

Multiple Choice

1 min

1 pt

A student is designing an experiment for the science fair. She needs to find a material that conducts an electric current, and her teacher has provided her with samples of the following elements. Which of them should she choose?

argon

copper

fluorine

phosphorous

Multiple Choice

1 min

1 pt

The mass of the products in a chemical reaction is the same as the mass of the reactants in the reaction. Which law best describes this statement?

The Law of Conservation of Angular Momentum

The Law of Superposition

The Law of Conservation of Matter

The Law of Entropy

Multiple Choice

1 min

1 pt

Which is an example of a chemical reaction?

a pot of water boiling

an iron nail rusting

a piece of ice melting

a sugar cube dissolving in tea

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