Elements, Compounds, Chemical Formulas and Equations

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed before the compounds in a chemical equation that indicate how many molecules or atoms of each reactant and product are involved.

Front

What is the correct symbol for Copper?

Back

Cu

Front

What is the chemical formula for acetic acid?

Back

C2H4O2

Front

How many hydrogen atoms are in acetic acid (C2H4O2)?

Back

4

Front

What is the total number of atoms in one molecule of baking soda (NaHCO3)?

Back

6

Front

Is water an element or a compound?

Back

Compound

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a compound using symbols for the elements and numbers to indicate the quantity of each element.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is a substance formed when two or more different types of atoms bond together.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in one molecule of the compound.

Front

What is the yield sign in a chemical equation?

Back

The yield sign (→) indicates the direction of the reaction, showing that reactants are transformed into products.