Review for 2nd Midterm - Pt.1

Front

How many atoms are in the chemical formula C6H12O6?

Back

There are 24 atoms in the chemical formula C6H12O6 (6 Carbon, 12 Hydrogen, 6 Oxygen).

Front

What is Titanium, Ti, classified as in the periodic table?

Back

Titanium (Ti) is classified as a transition metal.

Front

If a neutral atom of sodium has an atomic number of 11, how many protons does it have?

Back

A neutral atom of sodium has 11 protons.

Front

What are the horizontal rows in the periodic table called?

Back

The horizontal rows in the periodic table are called periods.

Front

Which group of elements is known as the least reactive non-metals?

Back

Noble gases are known as the least reactive non-metals.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in its nucleus.

Front

What is the difference between alkali metals and alkaline-earth metals?

Back

Alkali metals are in Group 1 and are highly reactive, while alkaline-earth metals are in Group 2 and are less reactive than alkali metals.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a molecule.

Front

What is the significance of the periodic table?

Back

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

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and non-metals, often used as semiconductors.