Chapter B-1 Lesson 1What are elements?

Matter

Matter is anything that takes up space and has mass.

(weight on Earth)http://www.exploratorium.edu/ronh/weight/index.html

Your weight on other planets and moons

Elementshttp://www.chem4kids.com/files/elem_intro.html

Elements cannot be broken down into other substances by heat,

light, or electricity.

Periodic Table of Elementshttp://www.webelements.com

Periodic Table of Elements is a chart that classifies elements by

their properties.

Atomshttp://www.chem4kids.com/files/atom_intro.html

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

the element

Nucleus

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

located

Proton

Proton is a particle in an atom that has a positive electrical charge. It

is located in the nucleus of the atom.

Neutron

Neutron is a particle in an atom that has NO charge. It is located in

the nucleus of the atom.

Electron

Electron is a particle in an atom that has a negative electrical

charge. It is located outside of the nucleus.

Chapter B-1 Lesson 2What are compound?

Molecule

Molecule – two or more atoms joined together

Compound

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

Formula

Water H2O

Carbon dioxide CO2

Glucose C6H12O6

Sodium chloride NaCl

Magnesium sulfate MgSO4

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