Elements

GOLD

• Al
• Ag
• Ar
• Au

Tags

NGSS.MS-PS1-1

The smallest part of an element is

• proton
• atom
• compound
• mixture

Tags

NGSS.MS-PS1-1

An example of matter made of only one element is

• water
• gold bar
• light bulb
• salad mixture

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

• Na

• NaCl

• MgCl2

• Sa

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

• Oxygen
• Sulfur
• Nitrogen
• Argon

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.MS-PS1-1

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

Tags

NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6