The document encompasses various concepts in chemistry, focusing on the distinctions between chemical and physical changes, and the properties and classification of elements. Chemical changes are characterized by indicators such as color change, gas formation, and temperature change, while physical changes involve alterations in texture, shape, and state of matter.
Chemical Change:
- color change, formation of a precipitate, formation of a gas, odor change, temperature change
Physical Change:
- texture, shape, temperature, and a change in the state of matter
Changes of state (changes from a solid to a liquid or a gas and vice versa).
Separation of a mixture.
Physical deformation (cutting, denting, stretching).
Making solutions (special kinds of mixtures).
Subtopic
Topic 3.1 Drawing Lewis Structures
Should Do's
Draw Lewis Structures to represent bonding in chemical formulas.
Topic 3.0
Understanding Chemical Formulas
Should Knows
Should Do's
Main topic
Metals, Non-Metals and Metalloids
Non Metals
- can be solid, liquid or gas, dull, brittle, insulators.
Ex; CI, O
Metalloids
Properties of both metals and non metals, metallic lustre, brittle, semi-conductors.
Ex; B, Si
See (PHOTO):
(https://drive.google.com/drive/folders/1vfT9i6WqrQtk8WXmurGr3HECrY7Hj49R?usp=sharing).
Metals
Solids, ductile, metallic lustre, malleable, good conductors.
Ex; Ag, Fe
Mini Lecture 3.0
The Periodic Table
Should Do's
1. State the periodic law and explain the organization of elements in the periodic table.
2. Predict the general properties of elements based on their location within the periodic table.
3. Identify metals, nonmetals, and metalloids by their properties and/or location on the periodic table