- Magnesium is a kind of alkaline earth metal
- Fluorine is a kind of gas
- Magnesium and fluorine react chemically producing magnesium fluoride
- Hence, magnesium fluoride is a new substance produced by magnesium and fluorine reacting chemically

- Magnesium fluoride is a new substance produced by magnesium and fluorine reacting chemically
- Chemical reactions cause new substances to form
- So, a chemical reaction happened between magnesium and fluorine

- A chemical reaction happened between magnesium and fluorine
- Combining two substances chemically causes chemical reactions
- So, a chemical reaction is caused by magnesium and fluorine combined chemically

Hence, a chemical reaction is caused by magnesium and fluorine combined chemically
Use The Periodic Table of the Elements and the information below to answer the question. Magnesium metal (Mg) is grayish-white in color and reacts actively with water. Fluorine (F2) is a greenish-yellow gas at room temperature and is a member of the halogen family. These two elements react to produce magnesium fluoride (MgF2), a chemical commonly used in making windows and lenses. How do the elements magnesium (Mg) and fluorine (F2) produce the compound magnesium fluoride (MgF2)?
- Chemical reactions cause new substances to form 
- Combining two substances chemically causes chemical reactions 
- Magnesium is a kind of alkaline earth metal 
- Fluorine is a kind of gas 
- Magnesium and fluorine react chemically producing magnesium fluoride