Thursday, March 17, 2011

Grade 8 Week 19: Compounds




Now that we know everything there is to know about elements and the Periodic Table...let's start combining elements for form compounds!  We are well on our way to ripping up these bonds, rearranging them, and blowing stuff up.


What are compounds?
How do compounds compare to the elements that make them up?

Contract 19 has you comparing your element from the previous weeks to the common compounds your element is a part of.

6 comments:

Anonymous said...

A compound is made up of 2 or more elements combined. For example: water's scientific name is H2O meaning it has one hydrogen element and 2 oxygen elements. The way elements bond with each other is by their electrons and positive and negative charges. When there are two single electrons on different elements, they are able to bond together because they need a partner. However, compounds like water are able to keep bonding when hydrogen and oxygen atoms are already taken. The element that gets the most electrons, I think, gets the negative charge and the others get the positive charge, therefore, they are able to bond with each other.

Stuart said...

A compound is a substance of two or more atoms bonded together.

josh leinau said...

is there more than 2 diffrent coumpound in a a certain item like milk?

April LaBoy said...

a compound is when 2 or more elemnts come tigether and we compare them by putting together all the stufffrom both elements.

Kassi said...

Brent, water has 1 oxygen and two hydrogen atoms.
A compound is made up of two or more atoms to form another substance. Compounds are different then the atoms that make them up because in water, the oxygen has the electrons closer to it so that is negitivly charged and the hydrogens are positivly charged.

Vicki Payne said...

A compound is a mixture of two or more elements put together, and usually,the compound has different traits from the elements making it up.