What types of hazards do certain substances pose? Sept 12/13 Activity A2 Types of Hazards LEARNING TARGET: I can infer hazard classifications a substance may have and assess appropriate safety precautions. CHALLENGE Q What types of hazards do certain substances pose? VOCAB: corrosive flammable hazardous materials mixture evidence

Corrosive Flammable Hazardous materials Mixture Evidence A substance that reacts with a solid material (dissolves) Catches on fire when exposed to a spark, flame or heat source (burns) Substances that are harmful to human health or environment. Combination of more than one pure substance that CAN BE separated Fact or information that helps you come to a conclusion

safety precautions for potassium hydroxide: goggles and gloves PROCEDURE AND DATA MATERIALS: PROCEDURE: Read on pg. A6-8 and summarize DATA: WS 2.1 Classroom Substances WS 2.2 Venn Diagram of Classroom Substances ANALYSIS - Discuss and answer Q 2 on pg. A-9 safety precautions for potassium hydroxide: goggles and gloves

ANALYSIS - Separate Sheet of paper – Turn in Independently answer Q 3 on pg. A-9 Which substance from WS 2.1 greatest hazard to humans / animals ? Use: WS 2.1 Classroom Substances & Claim-Evidence-Reasoning Make a Claim (A statement or conclusion that answers the original question/problem) Giving 2 pieces of Supporting Evidence (Scientific data that supports the claim) Explain Your Reasoning (A justification that connects the evidence to the claim)

toxic (poison), flammable (burns), corrosive (dissolves) ANS CHALLENGE Q What types of hazards do certain substances pose? A: toxic (poison), flammable (burns), corrosive (dissolves) HOMEWORK 1. Finish Analysis CER