8TH GRADE CHEMISTRY
Welcome to chemistry. Chemistry is the science of matter and its interactions. Everything around you is made of atoms – atoms and their chemical combinations, molecules. Everything you can see, touch, smell, and taste is made up of chemicals. So, the science of chemistry is a very wide ranging science. Parts can concentrate on how interactions of atoms and molecules allow the nerves in your body to conduct electrical signals.
Introducing Thermal Energy
All matter is made up of small particles and these particles are always moving. Particles making up the table (a solid) are moving even though we can’t see movement in the table; particles making up a cold soda (a liquid) are moving and particles inside a helium balloon (a gas) are moving. Scientists refer to the collective motion of particles in matter as thermal energy. The amount of thermal energy a substance has depends on its temperature and amount.
Temperature is a way of measuring a substance’s thermal energy. Heat is thermal energy that is on the move. It is moving from one system to another. Thermal energy is transferred when there are temperature differences and always transfers from warmer substances to cooler ones.
Welcome to chemistry. Chemistry is the science of matter and its interactions. Everything around you is made of atoms – atoms and their chemical combinations, molecules. Everything you can see, touch, smell, and taste is made up of chemicals. So, the science of chemistry is a very wide ranging science. Parts can concentrate on how interactions of atoms and molecules allow the nerves in your body to conduct electrical signals.
Introducing Thermal Energy
All matter is made up of small particles and these particles are always moving. Particles making up the table (a solid) are moving even though we can’t see movement in the table; particles making up a cold soda (a liquid) are moving and particles inside a helium balloon (a gas) are moving. Scientists refer to the collective motion of particles in matter as thermal energy. The amount of thermal energy a substance has depends on its temperature and amount.
Temperature is a way of measuring a substance’s thermal energy. Heat is thermal energy that is on the move. It is moving from one system to another. Thermal energy is transferred when there are temperature differences and always transfers from warmer substances to cooler ones.
Atomic Structure & The Periodic Table
1. Alkali metals 2. Alkaline earth metals 3. Atom 4. Atomic mass 5. Atomic number 6. Atomic size 7. Electron Cloud 8. Electrons 9. Groups 10. Halogens 11. Metalloids 12. Metals 13. Neutrons 14. Noble gases 15. Non-metals 16. Nucleus 17. Period 18. Periodic table 19. Protons 20. Symbol 21. Transition Metals 22. Valence Electron |
Physical & Chemical Properties
1. Boiling point 2. Combustibility 3. Density 4. Ductile 5. Flammability 6. Freezing point 7. Luster 8. Malleable 9. Melting point 10. Odor 11. Physical properties 12. Reactivity 13. Specific heat 14. Texture Matter
1. Compound 2. Elements 3. Evaporation 4. Filtration 5. Heterogeneous 6. Homogeneous 7. Matter 8. Mixtures 9. Molecules 10. Pure Substance 11. Solute 12. Solution 13. Solvent |