Unit 2 review

1.  If the mixture all looks the same it can be called:

• Compound
• Homogeneous
• Heterogeneous
• Pure substance

1.   Which of the following is an example of a compound?

• He
• Mg
• H₂(SO₄) 
• Fe

classify the picture

• Mixture of elements
• elements
• compound
• mixture of compounds

2,8,3 is the electron configuration for which element?

• Sodium
• Potassium
• Aluminum
• Carbon

Most matter is found in which form?

• element
• compound
• mixture

Sugar(C₆H₁₂O₆) is a....

• compound
• element
• mixture

Particles settle out in a 

• compound
• homogeneous mixture
• heterogeneous mixture
• solution

What charge does an electron have?

• postive
• negative
• neutral

where is a neutron found?

• nucleus
• regions
• orbitals

 Sulfur (S) has 17 neutrons and 16 protons.  What is the mass number?

• 17
• 33
• 32