Unit 1 Review Mix

Front

What is a qualitative measurement?

Back

A qualitative measurement describes characteristics or qualities that cannot be measured numerically, such as color, texture, or appearance.

Front

What is a quantitative measurement?

Back

A quantitative measurement is a numerical measurement that can be expressed in numbers, such as temperature, mass, or volume.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include lead (Pb), oxygen (O), and gold (Au).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. An example is rust (Fe2O3).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined, such as saltwater or air.

Front

Give an example of qualitative data.

Back

An example of qualitative data is 'The solution is blue.'

Front

Give an example of quantitative data.

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An example of quantitative data is 'It's 57 degrees F outside.'

Front

What distinguishes a compound from a mixture?

Back

A compound is chemically bonded and has a fixed composition, while a mixture consists of two or more substances that retain their individual properties and can vary in composition.

Front

What is the chemical formula for rust?

Back

The chemical formula for rust is Fe2O3.

Front

What is the difference between an element and a compound?

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An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.