Chemical Equasions Flashcards
What is a chemical equation?
A chemical equation is a symbolic representation of a chemical reaction.
What does the arrow (→) in a chemical equation mean?
The arrow (→) represents “yields” or “produces.” It shows the direction of the chemical reaction, indicating that the reactants are changing into products.
What does it mean to balance a chemical equation?
Balancing a chemical equation means making sure the number of atoms of each element is the same on both sides of the equation. This is because matter cannot be created or destroyed in a chemical reaction (Law of Conservation of Mass).
Balance: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
What are the reactants in the following reaction?
C₆H₁₂O₆ + O₂ → CO₂ + H₂O
The reactants are glucose (C₆H₁₂O₆) and oxygen (O₂).
What are the products in the following reaction?
Fe + O₂ → Fe₂O₃
he product is iron oxide
What does the “H₂” represent in the following equation:
H₂ + O₂ → H₂O?
It represents Hydrogen
What is formed when hydrogen reacts with oxygen?
Water (H₂O) is formed when hydrogen reacts with oxygen.
What is the purpose of a chemical equation?
The purpose of a chemical equation is to show the substances involved in a chemical reaction and how they change from reactants to products.
What is the product of the reaction between hydrogen and chlorine?
The product is hydrogen chloride (HCl).
What are the reactants of this chemical equation:
CH₄ + O₂ → CO₂ + H₂O
The reactants are methane (CH₄) and oxygen (O₂).
Mg + O₂ → ___
MgO₂
What does the symbol “H₂O” represent in a chemical equation?
H₂O represents water, which is composed of two hydrogen atoms (H) and one oxygen atom (O).
In the equation:
2Na + Cl₂ → 2NaCl
What is the product of the reaction?
The product is sodium chloride (NaCl).
What happens when iron reacts with oxygen?
Rust Forms
