Covalent bonds are formed when two atoms are able to <em>share</em> electrons.
Iroinic bonds are form when two atoms are <em> </em> electrons from each other to complete the bond. This results in a pair of ions.
<u>Covalent bonds:</u>
- Have a definite shape.
- Have a low melting point.
- At room temperature they are in a liquid or gas.
- They occur between two non-metals.
<u>Ionic bonds:</u>
- Have no definite shape.
- Have a high melting point.
- At room temperature they are solid.
- They occur between a metal and a nonmetal.
A. Consumers cannot produce their own food source so they have to eat other animals.
C. Rhizobia bacteria "prepare" the atmospheric nitrogen and make it useful for the plant.
Hope it helped,
Happy homework/ study/ exam!
In biology the three domains are Archaea, the Bacteria, and the Eukarya.
If the Independent Variable, then the Dependent Variable:
Your IV is how safe/supportive your design for your egg is
Your DV is what you believe/want the outcome to be after you drop the egg
So (an example could be):
If the structure of the apparatus that holds the egg is built of inflated balloons, then the egg will not crack when it is dropped.
