Chemical Formulas

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically bond together.

Front

What are the products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction, typically found on the right side of the reaction arrow.

Tags

NGSS.MS-PS1-5

Front

How do you determine the number of elements in a chemical formula?

Back

Count the different chemical symbols in the formula. For example, in C6H12O6, there are three different elements: Carbon (C), Hydrogen (H), and Oxygen (O).

Tags

NGSS.MS-PS1-1

Front

What is the correct chemical formula for a compound containing 3 Hydrogen (H), 1 Sulfur (S), and 4 Oxygen (O)?

Back

The correct formula is H3SO4, which is sulfuric acid.

Tags

NGSS.MS-PS1-1

Front

What do subscripts in a chemical formula indicate?

Back

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

Tags

NGSS.MS-PS1-1

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.

Tags

NGSS.MS-PS1-1

Front

What is the significance of the coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in a chemical reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction, typically found on the left side of the reaction arrow.

Front

How do you write a chemical formula for a compound?

Back

To write a chemical formula, identify the elements involved, determine the ratio of atoms, and use the appropriate subscripts to represent the number of each type of atom.

Tags

NGSS.MS-PS1-1