Identify and describe the particles that make an atom. See next slide.

The size of an atom can be compared to the size of _______________________ Let’s explore and find out! Wait for Mrs. Z before clicking on the website below!

 Click on the link below  Complete the worksheet called “Virtual Tour of the Atom”

1.Atoms are the basic building blocks of matter that make up everyday objects such as _____________, _______________, and ______________. 2. There are _____ naturally occurring kinds of atoms. 3. Name the 3 basic particles in an atom & their charges. a. b. c. 4. __________ electrons = the mass of 1 proton 5. ____________ and ______________ have about the same masses. 6. Atoms have the same number of ________________ as protons. 7. Adding a ____________________ makes a new atom. desk me & you air 90 Protons – positive charge Neutrons – no charge Electrons – negative charge 1836 Neutrons protons electrons proton

So, matter is made up of tiny particles called…

Molecules are made up of tiny particles called…

Lets zoom in…

One water molecule is made of 3 atoms…

Atoms are made up of tiny particles called…

Electrons hold the atoms together to form molecules.

Atoms are the smallest particles of the elements. There are over 100 different atoms. They are very, very, very small and yet they contain even smaller particles called electrons, neutrons and protons. Atoms bond to make molecules.

 Atoms: The building blocks of matter, the smallest particles of an element.  Protons: small particles in the nucleus of an atom. They have a positive charge.  Neutrons: small particles in the nucleus of an atom. They have no charge.  Electrons: tiny particles of an atom that move around the nucleus. They have a negative charge. + - N

Finding something in a mixed-up group OR Finding something when it’s organized?

Discuss at your table: How could you organize the elements into an easy to use format? Would you organize them in ABC order? Would you organize them by atomic #? What other ways can you think of?

26 Highlight 10 or more elements you know something about and write what you know about it on the back of this paper. Notice that # 71 and # 103 are out of place. If the elements on the bottom were placed where they really belong the table would be too wide for a one page document Uuo Uuq Uuh 118 Rf Uuq 112 Uub 110 Ds 111 RqDbSqBhHsMt

Use the words from this Word Bank to fill in the missing information: families, groups, atomic number, elements, periods elements groupsperiodsatomic # families

ELECTRON MICROSCOPES