Atoms and Elements

An example of matter made of only one element is

• water
• gold bar
• light bulb
• salad mixture

The chemical symbol for Helium is

• H
• Hg
• He
• O

Sodium is an ingredient in salt.  The chemical symbol for salt is

• N
• Na
• Mg
• S

Tags

NGSS.MS-PS1-1

The chemical symbol for Oxygen is

• Ox
• Og
• O
• On

The chemical symbol for Silicon is

• S
• Sn
• Sc
• Si

The chemical symbol for Carbon is

• C
• Cb
• Ca
• Cn

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

• Sodium and Nitrogen
• Oxygen and Aluminum
• Iron and Carbon
• Oxygen and Hydrogen

Tags

NGSS.MS-PS1-1

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

• Oxygen
• Sulfur
• Nitrogen
• Argon

 Chemical symbols for two elements that occur in the earth's atmosphere are

• Si and Al
• Ar and Al
• O and N
• H and N

Elements are represented by chemical symbol.  Symbols are written with

• all lower case letters
• all capital letters
• always only one  letter
• At least and ONLY one capital letter