SCIENCE 7 Lesson for Grade 7 Quarter 1.pptx

A ppt presentation for Q1 in Science 7

1. SCIENCE 7

2. ELEMENT An element is a substance made up of only one type of atom, each with the same number of protons. There are 118 known elements. Divided into metals, nonmetals, and metalloids. Arranged in order of increasing atomic number.

3. ELEMENTS IN THE EARTH’S CRUST

4. ELEMENTS IN THE EARTH’S ATMOSPHERE

5. ELEMENTS IN THE HUMAN BODY

6. COMPOUNDS a compound is a substance made up of two or more different chemical elements combined in a fixed ratio. can be broken down by a chemical change. common compounds are: Water Sodium chloride Calcium carbonate Hydrochloric acid

7. Solutions

8. Solutions a mixture in which all the particles are evenly mixed. Considered homogeneous mixtures, and they can involve solids, liquids, and gases. It is composed of a solute and a solvent. A solute is a substance that gets dissolved in a solvent.

9. Solubility Solubility is the ability of a solute to dissolve in a solvent to form a solution. Solubility is the amount of solute that dissolves in a solvent. Soluble – a substance that dissolves easily in a solvent. Insoluble – a substance that does not dissolve in a solvent Immiscible – substances that do not mix with each other

10. Factors affecting solubility