Physical Science Mid-Term Review Part B

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What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction, such as flammability.

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What is flammability?

Back

The ability of a substance to catch fire and burn.

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What is a chemical change?

Back

A process where one or more substances are transformed into different substances, such as iron rusting.

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What is iron rusting?

Back

A chemical change that occurs when iron reacts with oxygen and moisture to form iron oxide.

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What are noble gases?

Back

Elements in Group 18 of the periodic table that have full outer electron rings, making them stable and unreactive.

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What is the significance of full outer electron rings?

Back

Atoms with full outer electron rings are generally stable and do not readily react with other elements.

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What is alpha decay?

Back

A type of nuclear decay in which an atomic nucleus emits 2 protons and 2 neutrons, resulting in a new element.

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What is the difference between chemical and physical changes?

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Chemical changes result in new substances, while physical changes do not alter the chemical composition of a substance.

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What is bias in scientific experiments?

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A tendency to favor one outcome over others, which can affect the validity of the results.

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How can scientists reduce bias in experiments?

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By running multiple trials, obtaining quantitative data, and having independent labs replicate the experiment.