Summarizing for exam

Atomic Theories

Distinguishing between Elements, Compounds, and Mixtures Instructional Approach(s): The teacher should use the images on the slide to illustrate the differences between elements, compounds, and mixtures

Distributed Summarizing The diagram below shows how two elements can be mixed together…Which is a Compound? A Mixture? A. B. C. D. Compound Instructional Approach(s): Students should complete the distributed summarizing questions. Students can do the questions individually or with a partner. When ready, the teacher can click the mouse to show the answers. Mixture

Match the Picture to the Description Compound of 2 Elements Mixture of Molecules Element Molecule Compound of 3 Elements Instructional Approach(s): The teacher can have the students complete this individually at their desk, with a partner, or call six students to the front to identify the correct answers. When ready, the teacher should click the mouse to show the answers starting with the first picture and working down to the last picture Element/ Atoms Mixture of Atoms

Instructional Approach(s): Students can work individually or in small groups (2-3) to complete the matching pairs activity [linked on the matter resource page]. The teacher should go over the answers with the class when all groups have had time to complete the activity or give groups a copy of the key when ready to check their own answers.

The Atom Electron shell / Electron cloud Nucleus Proton Neutron Electron Electron shell / Electron cloud Nucleus The Atom

https://phet. colorado https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html

The Periodic Table

Bonds between atoms The atoms of different elements are held together in compounds by chemical bonds. Chemical bonds can hold atoms together in large networks or in small groups. Substances properties depend on their bonds

atomic happiness Electronic Balance Zero charge FULL SHELL

Hydrogen

Helium

Lithium

Beryllium

Boron

Carbon

Nitrogen

Oxygen

Fluorine Halogen

Neon Inert Gas Noble Gas

Ionic bond Li F 2 1 2 1

Li+1 F-1 Ionic bond The attraction between a cation and an anion. 2 2

Covalent Bond The sharing of a pair of electrons between 2 atoms. Cl2

Metallic Bond the sharing of valence electrons by neighboring metal atoms.

Atoms like people…