Chemistry #2 Question Preview (ID: 39152)
Chemistry.
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There are the same number of protons as there are electrons in an atom.
a) True
b) False
c)
d)
What are the two major elements that make up the Earth's Crust?
a) Nitrogen and Oxygen
b) Oxygen and Silicon
c) Aluminum and Sulphur
d) Chlorine and Argon
What does the polarity of water molecules cause?
a) Water molecules to move away from each other
b) Water molecules to stick together like magnets
c) Water molecules to disappear
d) Water moleucles to freeze
How many atoms of magnesium are found in H4Mg3Si2O9?
a) 1
b) 2
c) 3
d) 4
What is the chemical formula for table salt?
a) SAr
b) CO2
c) NaCl
d) ClNe
What is the chemical symbol for Hydrogen?
a) H
b) He
c) N
d) O
What is the chemical symbol for Lithium?
a) B
b) Ar
c) C
d) Li
What is the simplest and most abundent element in the universe?
a) Oxygen
b) Helium
c) Hydrogen
d) Boron
The tightness acress the surface of water that is caused by polar molecules pulling on each other is called what?
a) Surface Tension
b) Hard Bed
c) Pillow Top
d) Water Adehsion
As you drive your car thoruogh a rain stom water droplets stick to your window and occasionally run down the window. Why?
a) Ahesion
b) Cohesion
c) They are sticky
d) They want to look at you.
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