Element, compound or Mixture Agenda Submit Lab Report – today Review: elements, Physical or chemical, Notes on Elements, compound and mixtures. Homework
H hydrogen
Li lithium
Si Silicon
Ca calcium
Sn tin
B boron
C carbon
K potassium
Ge germanium
Mg magnesium
Pb lead
Ga gallium
Na sodium
Be beryllium
Al aluminum
Al aluminum
Sr strontium
Ba barium
New Elements The Periodic Table of the Elements IA IIA IIIB IVB VB VIB The Periodic Table of the Elements IA IIA IIIB IVB VB VIB VIIB VIIIB IB IIB IIIA IVA VA VIA VIIA VIIIA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Physical or Chemical Hair cut digestion Making tea welding
Elements, Compounds and Mixtures Date:
Substances An element is a substance that cannot be decomposed by any chemical reaction into simpler substances. All known elements listed on PT. A compound is a substance composed of two or more elements chemically combined. Ex NaCl
Mixtures A mixture is a material that can be separated by physical means into two or more substances. The substances are simply mixed together – no reaction. Ex. Iron + sulfur.
A homogeneous mixture is a mixture that is uniform in its properties throughout. (milk, lemonade, tap water) A heterogeneous mixture is a mixture that consists of physically distinct parts, each with different properties. (granite, sulfur mixed with iron)
Flow chart Physically separable Chemically separable
Practice – with table partner E/C/Ho/He Mercury Salt – sodium chloride Water Air Snickers bar Kool-aid Element Compound Homo mixture Hetero mixture
Round the room identification On your own or with a partner, analyze the objects within – determine E, C, Ho, He
ECM Salt water – Ho Sugar H2O – Ho Hardware – He Silicon – E Zinc – E Rocks – He Distilled H2O– C Lead – E Sand - He Sugar - C Sugar H2O – Ho Silicon – E Baking soda – C Oil & H2O – He NaCl – C Calcium – E Glass – C Play dough - Ho
Complete Homework Continue working on elements Element, compounds and mixtures worksheet. Tell what type of substance and mixture. Explain reasoning