Matter: Quiz 2

What does it mean if a mixture is heterogeneous?

• you can see the different parts
• cannot tell one part from another
• very well blended
• made of elements

Type of mixture that has the SAME COMPOSITION in every part.

• Homogenous
• Heterogeneous

Which of the following are pure substances?

• solutions
• compounds
• homogeneous mixtures
• colloids

A substance that is made up of only one kind of atom is a(an)

• compound
• homogeneous mixture
• element
• solution

What does it mean if a mixture is homogeneous?

• you can see the different parts
• cannot tell one part from another
• chunks of particles
• made of elements

Two classifications of a pure substance are

• homogeneous and heterogeneous
• atoms and elements
• elements and compounds
• solutions and colloids

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

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

• nucleus 
• electron cloud
• core 
• center 

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

• negatrons 
• electrons 
• neutrons 
• protons