5.4 Matter

Front

What happens to the solubility of sugar in tea as the temperature increases?

Back

The solubility of sugar in tea increases as the temperature increases, allowing it to dissolve faster.

Front

What is the smallest unit of an element that retains its properties?

Back

The smallest unit of an element that retains its properties is an atom.

Front

In a beaker of water, which factors affect how quickly sugar dissolves?

Back

Factors that affect how quickly sugar dissolves include temperature of the water, stirring, and the size of the sugar particles.

Front

What is a pure substance that cannot be broken down into simpler substances?

Back

An element is a pure substance that cannot be broken down into simpler substances.

Front

What is the arrangement of molecules in a solid?

Back

In a solid, molecules are closely packed together in a fixed arrangement, vibrating in place.

Front

How does the arrangement of molecules differ between solids, liquids, and gases?

Back

In solids, molecules are tightly packed; in liquids, they are close but can move past each other; in gases, they are far apart and move freely.

Front

What is the definition of matter?

Back

Matter is anything that has mass and occupies space.

Front

What is the difference between a mixture and a pure substance?

Back

A mixture contains two or more substances that are not chemically combined, while a pure substance has a uniform and definite composition.

Front

What is the process called when a solid turns into a liquid?

Back

The process when a solid turns into a liquid is called melting.

Front

What is the process called when a liquid turns into a gas?

Back

The process when a liquid turns into a gas is called evaporation.