Which of the following is a physical change? Making curd from:
5.
i) Boiling of water
iii) Burning of wood
(iv) Rusting of iron

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Which of the following electromagnetic waves can create ions?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: