Question |
Answer |
When is a covalent bond formed |
A covalent bond is formed when atoms combine to share electrons |
What is a single covalent bond |
A bond that shares one pair of electrons |
Name two compounds formed by a single covalent bond |
Hydrogen molecule and water molecule |
How many electrons does hydrogen have on its outer shell |
One |
How many electrons does hydrogen need to become stable |
One |
When two hydrogen atoms meet, what happens |
They share electrons and a single covalent bond is formed to form a hydrogen molecule |
How many electrons does oxygen have on its outer shell |
Six |
When two hydrogen atoms meet an oxygen atom what is formed |
They share their outer electrons and a single covalent bond is formed to form a water molecule. |
How many electrons does carbon have on its outer shell |
Four |
When four hydrogen atoms meet a carbon atom, what is formed |
Methane molecule (CH4) |
What is a double covalent bond |
A bond that is formed when atoms share two pairs of electrons |
Name a molecule where a double covalent bond occurs |
Oxygen (O2) |
How many electrons are present on the outer shell of an oxygen atom |
6 |