Word Equations for Chemical Reactions Quiz & Flashcards

What does the law of conservation of mass state in relation to chemical reactions?

What does it mean for a chemical equation to be balanced?

What is a skeletal chemical equation?

Why is it important to balance a chemical equation?

What does the word-equation 'Zinc + Sulphuric acid → Zinc sulphate + Hydrogen' represent?

What is the simplest way to represent the chemical reaction involving the burning of a magnesium ribbon in oxygen?

In a word-equation for a chemical reaction, where are the reactants and products written?

What does the arrow in a chemical equation indicate?

How can chemical equations be made more concise and useful?

What should be done to compare the number of atoms of each element on both sides of a chemical equation?

Chemical Reactions and Equations

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction, only transformed from one substance to another.

Balancing Chemical Equations

A balanced chemical equation is one in which the number of atoms of each element is the same on both the reactant and product sides.
A skeletal chemical equation is a chemical equation that has not been balanced, meaning the number of atoms of each element is not the same on both sides.

Importance of Balancing

It is important to balance a chemical equation to ensure that the law of conservation of mass is upheld and to accurately represent the reaction.

Representing Chemical Reactions

A word-equation represents a chemical reaction using words, such as "Zinc + Sulphuric acid → Zinc sulphate + Hydrogen".
The simplest way to represent the chemical reaction involving the burning of a magnesium ribbon in oxygen is "2Mg + O2 → 2MgO".

Chemical Equation Structure

In a word-equation, reactants are written on the left and products are written on the right.
The arrow in a chemical equation indicates the direction of the reaction, with reactants on the left and products on the right.

Refining Chemical Equations

Chemical equations can be made more concise and useful by using symbols and formulas instead of words.
To ensure a balanced equation, the number of atoms of each element should be compared on both sides of the equation and adjusted accordingly.

This quiz covers the concept of expressing chemical reactions using word equations. It involves simplifying the description of a chemical reaction into a concise word equation format.