Chemical Reactions Unit Test

Question

5 of 145 of 14 Items

Question
One molecule of bromine (Br2) and two molecules of potassium chloride (KCl) combine in a reaction. How many atoms are in the products?(1 point)
Responses

two
two

three
three

four
four

six

Answer 1

To determine how many atoms are in the products of the reaction between one molecule of bromine (Br2) and two molecules of potassium chloride (KCl), we first break down the reactants:

• 1 molecule of Br2 contains 2 bromine (Br) atoms.
• 2 molecules of KCl each contain 1 potassium (K) atom and 1 chlorine (Cl) atom.

Calculating the total number of atoms:

• From 1 molecule of Br2: 2 Br atoms
• From 2 molecules of KCl: 2 K atoms + 2 Cl atoms = 4 atoms (2 K + 2 Cl)

Now adding them together:

• Total = 2 (Br) + 2 (K) + 2 (Cl) = 6 atoms

Thus, the total number of atoms in the products is six.

So the correct response is: six.