ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science - Grade 7 Exam - ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science

Question 1

In a chemical reaction, atoms of the reactants are best described as which of the following?

Completely destroyed and replaced by new atoms Rearranged to form new substances with different properties Only mixed together without any change in how they bond Turned into energy so the products have no mass

Correct Answer:

Rearranged to form new substances with different properties

Question 2

Which observation is the BEST evidence that a chemical reaction has occurred?

Ice melts into liquid water when heated A solid dissolves in water but can be recovered by evaporation Two clear liquids are mixed and a new solid forms that was not present before A metal bar is cut into smaller pieces of the same metal

Correct Answer:

Two clear liquids are mixed and a new solid forms that was not present before

Question 3

A closed bottle contains a solid and a liquid that react to produce a gas. The total mass of the sealed bottle and contents is measured before and after the reaction. What result supports conservation of mass?

Mass after is greater because gas has extra mass that appears from nowhere Mass after is less because gas has no mass Mass stays the same because atoms are rearranged, not created or destroyed Mass doubles because both a solid and a liquid were used

Correct Answer:

Mass stays the same because atoms are rearranged, not created or destroyed

Question 4

Which statement correctly compares a physical change and a chemical change?

Physical changes always create new substances; chemical changes never do Physical changes rearrange atoms into new substances; chemical changes only change shape Physical changes may alter form or state without making a new substance; chemical changes produce new substances Physical and chemical changes are identical because both involve heat

Correct Answer:

Physical changes may alter form or state without making a new substance; chemical changes produce new substances

Question 5

Rust forms when iron reacts with oxygen in the presence of moisture. Rusting is classified as a chemical reaction mainly because:

The iron changes color only temporarily A new substance with different properties forms from the iron and oxygen The iron simply melts into a liquid Water freezes on the metal surface

Correct Answer:

A new substance with different properties forms from the iron and oxygen

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About this Exam

Prepare with the ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science - Grade 7 Exam practice quiz. This question bank includes 100 questions covering chemical, because, species, reaction, and change. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science - Grade 7 Exam

This practice set contains 100 questions from the matching question bank and focuses on chemical, because, species, reaction, and change. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science - Grade 7 Exam

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