Chemical Composition
Chemical composition refers to the identity and relative number of the elements that make up a substance.
Elements and Compounds
Elements are substances that cannot be broken down into simpler substances by chemical means. Compounds are substances composed of two or more elements that are chemically combined in a fixed ratio.
Atoms and Molecules
Atoms are the basic units of matter. They consist of a nucleus containing protons and neutrons, and electrons that orbit the nucleus. Molecules are formed when two or more atoms bond together chemically.
Chemical Formulas
Chemical formulas represent the composition of a substance. They show the symbols of the elements present and the ratio of atoms of each element in the compound.
Studying Chemical Composition
- Learn the periodic table of elements and understand the properties of common elements.
- Practice writing chemical formulas for different compounds.
- Understand the concept of moles and Avogadro's number for quantitative understanding of chemical composition.
- Explore the role of chemical composition in various everyday substances and their uses.
◂Science Worksheets and Study Guides Sixth Grade. Weather patterns
Study Guide
Weather patterns 
Worksheet/Answer key
Weather patterns Worksheet/Answer key
Weather patterns Worksheet/Answer key
Weather patterns Vocabulary/Answer key
Weather patterns Vocabulary/Answer key
Weather patterns Vocabulary/Answer key
Weather patterns Vocabulary/Answer key
Weather patterns
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
EARTH AND SPACE SCIENCE
Earth’s Systems
Integrate qualitative scientific and technical information (e.g., weather maps; diagrams; other visualizations, including radar and computer simulations) to support the claim that motions and complex interactions of air masses result in changes in weather conditions.