Question

name: _____________ name: _____________

1. calcium + chlorine 6) magnesium + fluorine

formula: _____________ formula: _____________
name: _____________ name: _____________

1. potassium + bromine 8) potassium + oxygen

Explanation:

Step1: Analyze Calcium and Chlorine

Calcium (Ca) has a charge of +2, Chlorine (Cl) has a charge of -1. To balance charges, we need 2 Cl⁻ for 1 Ca²⁺. So the formula is $CaCl_2$, and the name is Calcium Chloride.

Step2: Analyze Magnesium and Fluorine

Magnesium (Mg) has a charge of +2, Fluorine (F) has a charge of -1. We need 2 F⁻ for 1 Mg²⁺. Formula: $MgF_2$, Name: Magnesium Fluoride.

Step3: Analyze Potassium and Bromine

Potassium (K) has a charge of +1, Bromine (Br) has a charge of -1. So formula is $KBr$, Name: Potassium Bromide.

Step4: Analyze Potassium and Oxygen

Potassium (K) has +1, Oxygen (O) has -2. We need 2 K⁺ for 1 O²⁻. Formula: $K_2O$, Name: Potassium Oxide.

Answer:

1. Formula: $\boldsymbol{CaCl_2}$, Name: Calcium Chloride
2. Formula: $\boldsymbol{MgF_2}$, Name: Magnesium Fluoride
3. Formula: $\boldsymbol{KBr}$, Name: Potassium Bromide
4. Formula: $\boldsymbol{K_2O}$, Name: Potassium Oxide