8th Grade Science Elements, Compounds and Mixtures

Which is an example of a homogenous mixture?

Which two substances are considered pure substances?

What is an example of a homogeneous mixture?

Soil is made up of pieces of rock, wood, decayed plants & other materials What is it?

Which of these is a physical property?

Which is an example of a heterogeneous mixture?

In chemistry, elements are represented by

a mixture in which you can see the substances that make it up

What happens when two or more elements join together chemically?

What is the best definition for a compound?

A pure substance that cannot be separated into simpler substances by physical or chemical means

a sample of matter, either a single element or a single compound is a 

a combination of two or more substances that are not chemically combined

Which of the following is considered an element?

How are elements represented in chemistry

a substance made up of atoms of two or more elements

A cup contains 3 grams of salt & 100 grams of water. If the water evaporates what will be left?

Water (H₂O) is a compound tat contains what two elements?

Water is an example of

Which substance can be separated into a simpler substance physical methods?

Which type of pure substance is composed of one kind of atom?

What is the chemical formula for salt

Which type of matter consists of two or more substances that are NOT chemically combined?

Substances that CANNOT be broken down chemically into other substances are:

All elements are composed of extremely small particles called

The flammability of a substance is

What is the chemical formula for Carbon Dioxide