Chemistry AIS

What is the Metric base unit used when measuring with a graduated cylinder?

• Meter
• Liter
• degrees Celcius
• Gram

True/False
In a lab, you are responsible for only your safety.

• True
• False

The Independent Variable is the one that you change on purpose and labels the x (horizontal) axis.

• True
• False

The total magnification of a microscope which has an ocular lens(eyepiece) of 10X and an objective of 10X is

• 10X
• 20 x
  20X
• 100X
• 1000X

Which of the following subatomic particles has no charge and is located in the nucleus?

• protons
• neutrons
• electrons
• none of these

This is an example of which type of atomic model?

• Bohr
• Lewis dot
• Electron dot
• perfect

How many valence electrons are in this atom?

• 2
• 4
• 12
• cannot tell

C₂H₅NO₂

In the above molecular formula, how many molecules are there?

• 0
• 1
• 2
• 10

Acids have a pH of

• above 7
• 7
• below 7

In _________ changes, only the size, shape or temperature has changed, it remains the same molecule. In ___________ changes, the molecule breaks apart and new substances are formed.

• chemical, physical
• physical, physical
• physical, chemical
• chemical, chemical