1. Atom- The atom consists of a central, positively

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STAAR Readiness Standard:

8 th Grade Science

Name:

Date:

Objective: After watching the BrainPOP movie about Chemical Bonds, students will describe the structure of an atom and determine and elements identity.

8:5 B

1.

Atom- The atom consists of a central, positively charged core, the nucleus, and negatively charged particles called electrons that are found in orbits around the nucleus.

2.

Electron- A subatomic particle with a negative electric charge.

3.

Proton- A Subatomic particle with the symbol p or p+ and a positive electric charge.

4.

Neutron- A subatomic Hadron particle which has the symbol n or n 0. Has no net electric charge and a mass slightly larger than that of a proton.

5.

Nucleus- A membrane enclosed organelle found in Eukaryotic cells. It contains most of the cell’s genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes.

6.

Random- Made, done happening ,or chosen without method or conscious decision.

7.

Spherical- A coordinate system for three dimensional space where the position of a point is specified by three numbers: the radial difference of that point from a fixed origin.

8.

Ion- An ion is an Atom or molecule in which the total number or electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.

9.

Edible- Able to eat.

Name:

Date:

Objective: After watching the BrainPOP movie about Chemical Bonds, students will describe the structure of an atom and determine and elements identity.

10.

Flammable- Easily set on fire.

Name:

Date:

Objective: After watching the BrainPOP movie about Chemical Bonds, students will describe the structure of an atom and determine and elements identity.

Directions : Identify how the following atoms stick together by placing the key term beside the correct image.

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