Chemistry Midterm

You can determine the identity of an element if you know how many _______it has

• protons
• neutrons
• energy levels
• electrons

The number of energy levels an atom will have is based on the number of

• protons
• neutrons
• electrons
• quarks

Which of the following would NOT be found in the nucleus of an atom?

• protons
• neutrons
• electrons
• quarks

The name of the force that is able to overcome the repulsive force between protons in an atom is the

• weak nuclear force
• strong nuclear force
• strong atomic force
• electromagnetic force

The attraction between the nucleus and the electron cloud is . The attraction between the electrons in the electron cloud is

• repulsive; attractive
• repulsive; repulsive
• attractive; repulsive
• atractive; atractive

Which of the following is an example of a qualitative observation?

• The shirt is red.
• The shirt is 72 cm long.
• the shirt has a mass of 15 grams
• the shirt is ugly

How many significant figures are in the measurement 0.0103 mL?

• 2
• 3
• 4
• 5

What is purposefully being manipulated and changed in an experiment is the

• control group
• constant
• independent variable
• dependent variable

A factor in an experiment that is kept the same amongst all groups in an experiment is the

• independent variable
• dependent variable
• control
• constant