Chemistry Final

Front

What is the balanced equation for the reaction of calcium with water?

Back

@@Ca + 2H_2O ightarrow Ca(OH)_2 + H_2@@

Front

How many HCl molecules are needed to balance the equation: Mg + __HCl -> MgCl2 + H2?

Back

2

Front

Which element is located in Group 1, Period 2 of the periodic table?

Back

Lithium

Front

Which element is most likely to form a +1 ion?

Back

Sodium

Front

Why does atomic radius decrease across a period?

Back

Increased nuclear charge pulls electrons closer.

Front

What is the chemical formula for calcium hydroxide?

Back

Ca(OH)2

Front

What is the definition of a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict chemical behavior.

Front

What does the term 'ion' mean in chemistry?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between a cation and an anion?

Back

A cation is a positively charged ion, while an anion is a negatively charged ion.