1st Semester Exam Review

Based on the model for carbon dioxide, what would be the correct formula?

• C₂O
• CO₂
• C₂O₂
• CO

Which unit is often used to measure mass?

• grams
• ounces
• inches
• centimeters

Periods tell us the number of.....

• shells/energy levels
• valence electrons
• molecules
• families

Groups tell us the number of .....

• shells/energy levels
• valence electrons
• molecules
• protons

How do we know which elements are similar?

• By their period number
• By their group number
• By the amount of protons
• By their color

Which is an example of velocity?

• 65 mph
• 65 mph North
• 65 m/s²
• 65 g/cm³

Which is not an indicator of a chemical reaction?

• Temperature Change
• Color Change
• Precipitate forms
• Mixing

What is the acceleration of a 5 kg object if a force of 10 N acts upon it?

• 2 m/s²
• 50 m/s²
• .5 m/s²
• .2 m/s²

What is the mass of an atom that contains 12 protons, 8 neutrons, and 12 electrons?

• 12 amu
• 24 amu
• 20 amu
• 32 amu

What volume of liquid is in this graduated cylinder?

• 5 ml
• 15 ml
• 20 ml
• 25 ml