District Assessment #1 2526

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a substance using symbols for its constituent elements.

Front

What does the symbol 'Mn' represent?

Back

'Mn' is the chemical symbol for Manganese, which is a chemical element.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

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 made of two or more different types of atoms bonded together.

Front

How many atoms are in the formula Sn(NC3)2?

Back

There is one atom of tin (Sn) in the formula Sn(NC3)2.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.

Front

What is an example of an element?

Back

An example of an element is Carbon (C).

Front

What is an example of a compound?

Back

An example of a compound is Water (H2O).

Front

What does the formula HNO4 represent?

Back

HNO4 represents Nitric Acid, which is a compound made of Hydrogen, Nitrogen, and Oxygen.