Chem L1 QUIZ

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

He proposed the atomic theory.

• Bohr

• Chadwick

• Dalton

• Rutherford

How many protons does Nitrogen have?

• 7

• 8

• 14

• 14.01

Which of the following particles is NOT found in an atom's nucleus?

• proton

• neutron

• electron

Which diagram best shows the end result of diffusion?

• F
• G
• H
• J

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low
• Low, high
• Low, low,
• High, high

An increase in temperature does what to diffusion?

• Speeds it up
• Slows it down
• Has no effect
• I wish i knew. Really I do.

when a person smells something, what is actually traveling up their nose?

• solids 
• moleulces 
• matter
• plasma 

Which form of matter has a definite shape and takes up space (has definite volume)?

• liquid

• solid

• gas

• clay

What is happening when my ice cream changes from a solid to a liquid?

• freezing
• melting
• burning
• evaporation