Chemistry 1 | Final Exam 22/23

Who is required to wear eye protection (goggles) in the laboratory?

• All visitors, unless they are present for less than one minute

• Students, but not teachers

• Everyone, but only when the chemical look dangerous

• Everyone, no exceptions

• No one, ever. Goggles are tacky

You have been injured in the laboratory (cut, burn, etc.). First you should...

• apply first aid yourself

• see a doctor after school

• tell the teacher immediately

• visit the school nurse after class

• cry until the pain goes away

Matter is defined by anything that...

• has mass and volume.
• has mass only.
• takes up space.
• neither has mass nor takes up space

Junior Chemist is mad that they failed their test and burned it to ash using a Bunsen burner. Is this an example of a physical or chemical change? Why?

• Physical Change - it’s the same substance, only the phase changed
• Chemical Change - a new substance has formed
• Chemical Change - it’s the same substance, only the phase changed
• Physical Change - a new substance has formed

Which of the following statements best describes an atom?

• Protons and electrons grouped together in a random pattern
• Protons and electrons grouped together in an alternating pattern
• A core of electrons and neutrons surrounded by protons
• A core of protons and neutrons surrounded by electrons

Table salt (chemical formula NaCl) & water (chemical formula H₂O) are examples of…

• compounds

• elements

• mixtures

• atoms

What is the atomic number and mass number of this atom?

• The atomic number is 3; the mass number is 7.

• The atomic number is 4; the mass number is 7.

• The atomic number is 4; the mass number is 6.

• The atomic number is 3; the mass number is 6.

• The atomic number is 7; the mass number is 10.

An atom of Nitrogen has 7 protons, 7 neutrons, and 8 electrons. What is the overall charge for this atom?

• -1 charge

• neutral

• +1 charge

• +2 charge

• 0 charge

What two sections hold the majority of metals on the Periodic Table?

• Sections B & C

• Sections B & D

• Sections A & B

• Sections A & C

• None of these

An atom of Oxygen has a -2 overall charge. This O^-2 atom is a(n)...

• Ration

• Anion

• Cation

• ‘Ion-even-kno