TOPIC 4 CLASSIFYING ELEMENTS MRS FEDUNEC ELEMENT SYMBOLS

TOPIC 4: CLASSIFYING ELEMENTS MRS. FEDUNEC

ELEMENT SYMBOLS: • The symbol used to denote an element • Example: P is phosphorous

HOW DID YOU GO ABOUT FINDING THE NAMES?

IONS • Cation: an atom with a positive charge • Anion: an atom with a negative charge

DESCRIPTION OF ELEMENTS • Lustre: • How reflective or reflective something is • Malleable: • able to be hammered or pressed permanently out of shape without breaking • Ductile: • able to be drawn out into a thin wire

CLASSIFYING ELEMENTS Metals Type of State at Appearance Conductivity Malleability Ion room and ductility Formed temperature Cation Solid Lustrous Very Yes

CLASSIFYING ELEMENTS Type of State at Appearance Conductivity Malleability Ion room and ductility Formed temperature Non-metals Anion all states not lusterous nonneither conductive

CLASSIFYING ELEMENTS Type of Ion Formed Metalloid Variety State at Appearance Conductivity Malleability room and ductility temperature solid lustrous conducts heat No but not electricity

STAIRCASE RULE

USING THE PERIODIC TABLE • Period: the rows of the periodic table • You write a sentence from left to right, and it ends with a period.

USING THE PERIODIC TABLE • Group: the columns of the periodic table • Tells you how many electrons an element can gain or lose • Chemical families are arranged by group

CHEMICAL FAMILIES Chemical Family Location Charge in Ionic Form Properties Alkali Metals Group 1 reactive because they have a spare electron to give away +1

CHEMICAL FAMILIES Chemical Family Location Charge in Ionic Form Properties Alkali Earth Metals Group 2 less reactive than alkali metals Give away 2 electrons +2

CHEMICAL FAMILIES Chemical Family Location Charge in Ionic Form Properties Transition Metals Group 3 - Variety 12 Metal and non metal properties

CHEMICAL FAMILIES Chemical Family Location Charge in Ionic Form Properties Halogens Group 17 -1 react vigorously, gain electrons, corrosive

CHEMICAL FAMILIES Chemical Family Location Charge in Ionic Form Noble Gases Group 18 No ionic form Properties unreactive, at octet

PERIODIC TABLE SONG • https: //www. youtube. com/watch? v=Vg. VQKCcfwn. U&index=53&list=PLu 3 hix. HFHS 61 Af. Xa. OBs. S_6 zrjs. LPy. WZ 5 L • Harry Potter likes science and you should too! • https: //www. youtube. com/watch? v=v 1 Tf. PDl. A 1 x. E

PRACTICE • Topic 4 questions • Pg. 125 questions • #1 -3, 5