Atomic Theory and Classification of Matter

All matter is made of extremely small particles called atoms

• Atomic Theroy

• Classification of Matter

• Dalton's Theory

• Einstein Theory of Relativity

Which one of these examples is a homogeneous mixture?

• tea

• rice and beans

• NaCl (Table Salt)

• lemonade with pulp

Negatively charged particle

• proton

• neutron

• electron

Neutral charge particle

• proton

• neutron

• electron

Positively charge particle

• proton

• neutron

• electron

What is the green subatomic particle?

• Electron

• Proton

• Neutron

• Nucleus

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

• nucleus 
• electron cloud
• core 
• center 

A substance that contains only one type of atom and has its chemical properites is a(n)

• compound

• element

• heterogeneous mixture

• homogeneous mixture

2 or more different elements that are bonded together is called...

• A. element

• B. compound

• C. mixture

• D. solution

Which of these is considered a chemically combined substance?

• homogeneous mixture

• single atom

• compound

• heterogenous mixture