Front

The chemical symbol for Helium is

Back

He

Front

An example of matter made of only one element is: water, gold bar, light bulb, salad mixture

Back

gold bar

Front

What is the most abundant element found in the earth's atmosphere?

Back

Nitrogen

Front

The two most common elements found in the oceans are. Remember oceans are made up of water.

Back

Oxygen and Hydrogen

Front

Elements are represented by chemical symbol. Symbols are written with:

Back

At least and ONLY one capital letter.

Front

The percentage of Nitrogen in the earth's atmosphere is

Back

seventy-eight percent

Front

The smallest part of an element is

Back

atom

Front

Which of the following statements are characteristics of an element?

I.   Made from a mixture
II.  a pure substance
III. represented by a symbol
IV. make up matter on Earth

Back

II, III, IV

Front

How many elements are in HHe?

Back

2

Front

Which substance is a compound? Chlorine, Calcium, Table Sugar, Sodium

Back

Table Sugar