Staar Science

Front

What are the vertical columns in the Periodic Table called?

Back

Groups

Front

In which category is our Sun located?

Back

Main Sequence

Front

Is H2O an element or a compound?

Back

Compound

Front

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

Back

A balanced equation has the same number of each type of atom on both sides.

Front

What is the net force if two forces of 5000 N right and 1000 N left are acting on an object?

Back

4000 N right

Front

What is the definition of a compound?

Back

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

Front

What is the definition of a group in the Periodic Table?

Back

A column of elements with similar properties.

Front

What is the definition of a period in the Periodic Table?

Back

A row of elements that have the same number of electron shells.

Front

What is the significance of the Main Sequence in stellar classification?

Back

It is the stage where stars spend most of their lifetime, fusing hydrogen into helium.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation.