Atoms, Elements and Compounds

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

How many Oxygen are in H₂O?

• 1
• 2
• 0
• 4

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

A proton is....

• A negatively charged subatomic particle
• A positively charged subatomic particle
• A neutrally charged subatomic particle
• The only subatomic particle located in the nucleus

All of the following statements are true about atoms except

• The building blocks of matter are atoms.

• All atoms have the same number of protons, neutrons and electrons

• Atoms are composed of three subatomic particles: Protons, Neutrons and Electrons

• Atoms are indivisible meaning they cannot be broken apart.

Which of the following is a pure substance?

• O₂
• Al₂CO₅
• C₆H₁₂O₆
• SiO₂