Elements & Molecules

CARBON

• C
• Ca
• Cl
• Cu

Tags

NGSS.MS-PS1-1

HELIUM

• H
• He
• Hl
• Hm

Tags

NGSS.MS-PS1-1

HYDROGEN

• H
• He
• Hy
• Hd

Tags

NGSS.MS-PS1-1

The smallest part of an element is

• proton
• atom
• compound
• mixture

Tags

NGSS.MS-PS1-1

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

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

• N
• Na
• Mg
• S

Tags

NGSS.MS-PS1-1

An example of matter made of only one element is

• water
• gold bar
• light bulb
• salad mixture

Molecules are 

• 2 atoms bound together 
• 2 elements bound together 
• 2 or more atoms mixed together
• 2 or more atoms bound together 

Tags

NGSS.MS-PS1-1

Which of the four following items are made up of one or more molecules?

• Gold
• Hydrogen
• Salt 
• Neon 

Tags

NGSS.MS-PS1-1

What is a bond between two molecules? 

• a chemical bond is an attraction or pull between atoms that holds them together.
• a chemical bond is a physical structure in an atom that connects it to other atoms.
• a chemical bond is a substance that is made up of matter that holds atoms together
• sticks 

Tags

NGSS.MS-PS1-1