1. Chapter B-1 Lesson 1 What are elements?

2. Matter

3. Matter is anything that takes up space and has mass. (weight on Earth) http://www.exploratorium.edu/ro nh/weight/index.html Your weight on other planets and moons http://www.exploratorium.edu/ro nh/weight/index.html

4. Elements http://www.chem4kids.com/files/ele m_intro.html http://www.chem4kids.com/files/ele m_intro.html

5. Elements cannot be broken down into other substances by heat, light, or electricity.

6. Periodic Table of Elements http://www.webelements.com http://www.webelements.com

7. Periodic Table of Elements is a chart that classifies elements by their properties.

8. Atoms http://www.chem4kids.com/files/ato m_intro.html http://www.chem4kids.com/files/ato m_intro.html

9. Atom is the smallest particle of an element that has the properties of the element

10. Nucleus

11. Nucleus is the center of an atom where protons and neutrons are located

12. Proton

13. Proton is a particle in an atom that has a positive electrical charge. It is located in the nucleus of the atom.

14. Neutron

15. Neutron is a particle in an atom that has NO charge. It is located in the nucleus of the atom.

16. Electron

17. Electron is a particle in an atom that has a negative electrical charge. It is located outside of the nucleus.

18. Chapter B-1 Lesson 2 What are compound?

19. Molecule

20. Molecule – two or more atoms joined together

21. Compound

22. Compound – a substance made up of atoms of more than one element joined together in a molecule http://www.chemicalformula.org/chemistry-games/mix-and-match-chemical-formula

23. Formula Water H 2 O Carbon dioxide CO 2 Glucose C 6 H 12 O 6 Sodium chloride NaCl Magnesium sulfate MgSO 4

24. In a chemical formula the symbol of each element is shown with subscript numbers telling how many atoms of each element are in the molecule http://www.chemicalformula.org/chemistry-help/common-chemical-formula http://www.chemicalformula.org/chemistry-help/common-chemical-formula