What is MATTER It is anything that occupies

What is MATTER? It is anything that occupies space and has mass and weight.

What is MOLECULE? It is formed when two or more atoms join together.

gas ? liquid ? solid ?

What are ATOMS? They are tiny particles and the building blocks of matter. Sub-atomic particles are protons, neutrons, and electrons.

Atoms - Red clay represents the proton - Blue clay represents the neutron - Yellow clay represents the electron

Proton (p) - positively (+) charged - always positioned in the nucleus

Electron (e) - negatively (-) charged - always positioned on the orbit or around the nucleus

Neutron (n) - has no charge - has the same number of protons and electrons - always positioned in the nucleus, together with the proton

Remember: Properties of atoms are determined by the atomic number. Each element has a corresponding atomic number.

ATOMS

What is an ELEMENT? It is made up of only ONE type of atom therefore, it is a pure substance. Less than 100 different elements occur naturally on Earth, others were made in the laboratories.

Atomic Number - shows the number of protons an element has

Atomic Mass - is the sum how many protons and neutrons an element has

IF one subatomic particle is removed, would it be the same element? Why not?

What is the importance of knowing the complete subatomic particles in an element?

In life, how can we compare the subatomic particles to you/us?

Seatwork: Draw a if the statement is correct and X if not. 1. The atoms of each element are different from the atoms of all other elements. 2. Elements can be identified by the number of protons found in the nucleus of an atom.

Seatwork: 3. Elements combined in different ways to form everything is matter. 4. When number of electrons and protons are not the same, it will still be the same element. 5. If the number of electrons and protons are the same, there will always be an electrical charge.