These are good conductors of heat and electricity.

These are subatomic particles found in the nucleus of an atom and has positive charge.

These subatomic articles found in the nucleus have a zero charge.

These subatomic particles located in the nucleus have a negative charge.

This is a type of bonding that occurs when electrons of metals are transferred among a group of atoms.

This is a type of bonding that occurs when electrons are transferred from atoms of metals to atoms of non-metals.

This atom has a different number of electrons and protons

This type of bonding occurs when electrons shared between atoms of non-metals or non-metals and metalloids.

This is the most common compound on Earth.

These are the two most abundant elements in the universe.

These two elements are liquids at room temperature

These two elements are found in all organic compounds.

How many protons does a hydrogen atom usually have?

How many electrons does a hydrogen atom have?

How many netrons does a hydrogen atom have?

Which of the following are noble gases?

hydrogen H atomic number 1

oxygen O atomic number 8

carbon C atomic number 6

helium He atomic number 2

What is the chemical formula for oxygen?

hydrogen H atomic number 1

oxygen O atomic number 8

carbon C atomic number 6

helium He atomic number 2

What is the chemical formula for glucose?

hydrogen H atomic number 1

oxygen O atomic number 8

carbon C atomic number 6

helium He atomic number 2

What is the chemical formula for carbon dioxide?

What does the subscript 2 represent in the formula H₂O?

What is the difference between a molecule of an element and a molecule of a compound?

Which of the following elements are metals?

Which of the following are non-metals?