Question

Question 1
Grinding a Tylenol tablet into powder increases the rate of reaction due to increased ____________________.


a
concentration
b
temperature
c
reactants mass
d
surface area

Answer 1

The correct answer is:

d) surface area

Grinding a Tylenol tablet into powder increases the surface area, which in turn increases the rate of reaction.

Answer 2

Question 2
Looking at the periodic table, determine the number of valence electrons present in Potassium (K).



a
4 valence electrons
b
1 valence electron
c
2 valence electrons
d
3 valence electrons
Question 3
One molecule of Iodine (I2) and two molecules of sodium chloride (NaCl) combine in a reaction. How many atoms are in the products?

a
4
b
3
c
2
d
6

Answer 3

**Question 2:** The correct answer is:

b) 1 valence electron

Potassium (K) is in Group 1 of the periodic table, which means it has 1 valence electron.

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**Question 3:** To determine the number of atoms in the products, consider the reaction:

1 molecule of Iodine (I2) contains 2 iodine atoms.
2 molecules of Sodium Chloride (NaCl) contain 2 sodium atoms and 2 chloride atoms.

Hence, the total number of atoms in the products is:
- Iodine: 2 atoms
- Sodium: 2 atoms
- Chlorine: 2 atoms

Adding these together gives: 2 (I) + 2 (Na) + 2 (Cl) = 6 atoms.

The correct answer is:

d) 6