Respiration
Respiration is a chemical reaction that
takes place in cells and allows them to release
energy.
The chemical reaction can be summed up
with the following equation
glucose + oxygen 
water + carbon dioxide ( + energy)
Reactants are the substances that react
together in a chemical reaction.
In
respiration the reactants are glucose and
oxygen.
Glucose is a type of sugar and is moved
from our digestive system into the blood at the
small intestines.
Oxygen is a gas that is needed for
respiration. We take it from the air when we
breathe in and it moves from our lungs, to our
blood to be carried wherever it is needed in the
body.
Products are the substances that are made
during a chemical reaction. In respiration the
products are water and carbon dioxide.
Water is a product of respiration that goes
into the surrounding tissues
Carbon dioxide is a gas that is made during
respiration. At the lungs the carbon dioxide
moves from the blood to the lungs and when
we breathe out we get rid of the carbon dioxide
from our body into the air.
Questions
Use the following words to complete the
sentences below.
glucose
respiration
water
oxygen
carbon dioxide
1. Energy is released by cells by
_____________.
2. The reactants of respiration are __________
and ____________.
3. The products of respiration are __________
and ___________.
Velcro Cards statements for laminating and pairing
Respiration
The release of energy by cells
Glucose
A type of sugar
Oxygen
A gas that is needed for respiration
Reactants
The substances that react together
Product
The substance that is made during a chemical
reaction
Water
A product of respiration that goes into the
surrounding tissues
Carbon dioxide
A gas that is made during respiration