STAAR Science Matter Review

Front

What is a solution?

Back

A solution is a mixture where one substance (solute) dissolves in another (solvent), resulting in a homogeneous mixture. For example, lemon juice and sugar dissolved in water.

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What are physical properties?

Back

Physical properties are characteristics of a substance that can be observed or measured without changing its identity, such as color, density, and state of matter.

Front

What does it mean for a substance to dissolve?

Back

To dissolve means to mix a solute with a solvent until the solute is no longer visible, creating a solution. For example, sugar dissolving in water.

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What is density?

Back

Density is the mass of a substance divided by its volume. It determines whether an object will float or sink in a fluid.

Front

How do heat and evaporation relate to cloud formation?

Back

Heat from the sun warms the ocean, causing water to evaporate. The water vapor then rises and cools, condensing to form clouds.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither a definite shape nor volume.

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What is thermal conductivity?

Back

Thermal conductivity is the ability of a material to conduct heat. Metals typically have high thermal conductivity.

Front

What is a cumulonimbus cloud?

Back

A cumulonimbus cloud is a type of cloud that is tall and dense, often associated with thunderstorms and severe weather.

Front

What is the role of water vapor in the atmosphere?

Back

Water vapor is a gas that contributes to weather patterns and is essential for cloud formation and precipitation.

Front

What is an example of a metal?

Back

An example of a metal is copper, which is known for its conductivity and is used in electrical wiring.