Chemistry Fall Final 20223

1. How many protons are in a Potassium (K) atom?

• 40 protons
• 20 protons

• 1 proton
• 4 protons

2. How many valence electrons are in a Phosphorus (P) atom?

• 31 valence electrons
• 15 valence electrons
• 16 valence electrons
• 5 valence electrons
• 3 valence electrons

3. How many electrons are in the sulfur ion below?

• 16 electrons
• 18 electrons
• 14 electrons
• 6 electrons

4. How many electrons are in in the Barium ion below

• 54 electrons
• 56 electrons
• 58 electrons
• 81 electrons

5. Which element is found in group 3A, period 4

• Gallium
• Silicon
• Boron
• Carbon

6. How many neutrons are in a Fluorine (F) atom?

• 9 neutrons
• 19 neturons
• 7 neutrons
• 10 neutrons

7. Which element has 22 neutrons?

• Oxygen (O)
• Sodium (Na)
• Argon (Ar)
• Titanium (Ti)

8. There are 1000 g in 1 kg. How many kg are in 7500 g?

• 75 kg
• 7.5 kg
• 0.75 kg
• 750 kg

9. There are 1000 ml in 1 L. How many ml are in 65 L?

• 0.65 ml
• 650 ml
• 65000 ml
• 6.5 ml

10. Your friend is 18 years old. How many hours old are they? (convert 18 years to hours)

• 157,680 hours
• 9,460,800 hours
• 0.00205 hours
• 68,9870 hours