(EX) Chemical Reactions

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation. If they are equal, the equation is balanced.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is the formula for Aluminum Oxide?

Back

The formula for Aluminum Oxide is Al₂O₃.

Front

How many Aluminum atoms are in the compound Al₂O₃?

Back

There are 2 Aluminum atoms in Al₂O₃.

Front

What is the total number of elements in C₆H₁₂O₆?

Back

There are 3 different elements in C₆H₁₂O₆: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What is the balanced equation for the reaction of Hydrogen and Oxygen to form water?

Back

2 H₂ + O₂ → 2 H₂O.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means adjusting the coefficients in front of the compounds to ensure that the number of atoms for each element is the same on both sides.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule. For example, in H₂O, the subscript '2' indicates there are 2 Hydrogen atoms.