Question

1. why can bugs and leaves float on top of water? *

mark only one oval.
surface tension
covalent and hydrogen bonding
both bonding and surface tension

1. which elements are found in water? *

mark only one oval.
one hydrogen and one oxygen
2 hydrogens and one oxygen
one hydrogen and 2 oxygens

Explanation:

• Question 4: Surface tension is the property of the surface of a liquid that allows it to resist an external force. Bugs and leaves can float on water due to surface tension. Covalent and hydrogen bonding are related to the internal structure of water molecules but not directly the reason for floating.
• Question 5: The chemical formula of water is \(H_2O\), which means there are 2 hydrogen (\(H\)) atoms and 1 oxygen (\(O\)) atom.

Answer:

1. surface tension
2. 2 hydrogens and one oxygen