Study Guide for Chemistry Benchmark/Chemistry Unit Test

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components can be seen and are not uniformly distributed.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, and they are found between metals and nonmetals on the periodic table.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per milliliter (g/mL).

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends in properties.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What is an element?

Back

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

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties and can be separated by physical means.

Front

What is a noble gas?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are known for their lack of reactivity due to having a full valence shell.