Matter And Chemical Change - Concept 1 - Quiz, Flashcards & Trivia

1. Define matter.

Something that has color and shape.

Everything that is liquid.

Anything that has mass and occupies space.

Things that can float.

Matter refers to anything that has mass and occupies space, not just things with color and shape, or things that are liquid or can float.

Explanation

Matter refers to anything that has mass and occupies space, not just things with color and shape, or things that are liquid or can float.

2. What are the lab safety rules?

It is not necessary to report accidents and spills to your teacher.

Tasting the substances is acceptable in some cases.

Breaking glassware is not a big deal as long as it's cleaned up afterwards.

Read all written instructions carefully before doing an activity. Listen to all instructions and follow them carefully. Wash your hands thoroughly after each activity and after handling chemicals. Wear safety googles, gloves, or an apron as required. Think before you touch. Equipment may be hot and substances may be dangerous. Smell a substance by fanning the smell toward you with your hand. Do not put your nose close to the substance. Do not taste anything in the lab. Tie back loose hair and roll up loose sleeves. Never pour liquids into containers held in your hand. Place a test tube in a rack before pouring substances in it. Clean up any spelled substances immediately as instructed by your teacher. Never look into test tubes or containers from the op. Always look through the sides. Never use cracked or broken glassware. Make sure you follow your teacher's instructions when getting rid of broken glass. Label any container you put chemicals in. Report all accidents and spills immediately to your teacher. If there are WHMIS (Workplace Hazardous Materials Information System) safety symbols on any chemical you will be using, make sure that you understand all the symbols.

3. What does WHMIS stand for?

Worksite Hazardous Materials Information System

Workplace Health Management System

Workplace Hazardous Materials Information System

Workplace Hazardous Materials Inspection Standard

WHMIS is a system designed to ensure the safety of workers by providing information about hazardous materials in the workplace.

Explanation

WHMIS is a system designed to ensure the safety of workers by providing information about hazardous materials in the workplace.

4. What are some general safety precautions in the lab?

Inform your supervisor of health-related problems, allergies. Never eat or drink in the lab area. Do not attempt lab activities at home unless told to do so by your teacher, and only under the direct supervision of an adult. Touch substances only when told to do so. Smell substances using the proper technique - wafting fumes toward you. Chemicals should always be smelled by holding the container in front of your face and slowly (in a circular motion) wafting the vapours toward your nose. Never place the chemical right at your nose and inhale. Pour substances properly and safely. Rinse off substances immediately that come into contact with skin or clothing. Wash hands after handling substances and before leaving the lab. Clean up all spills immediately. Dispose of harmful substances by following teacher's directions. Work quietly and carefully. Never work alone Wear appropriate clothing Wear safety equipment Have hair tied back Wear long sleeves and long pants. Wear chemical-resistant apron or lab coat Wear chemical splash goggles or face shield and protective or insulated gloves Wear closed-toed shoes.

It is safe to perform lab activities at home without adult supervision.

Eating and drinking in the lab area is acceptable as long as it is done discreetly.

You do not need to follow specific clothing requirements or wear safety equipment in the lab.

It is important to follow strict safety precautions in the lab to prevent accidents and injuries. Eating and drinking in the lab can lead to contamination, performing lab activities at home without supervision can be dangerous, and not wearing appropriate clothing or safety equipment can put you at risk of exposure to harmful substances.

Explanation

It is important to follow strict safety precautions in the lab to prevent accidents and injuries. Eating and drinking in the lab can lead to contamination, performing lab activities at home without supervision can be dangerous, and not wearing appropriate clothing or safety equipment can put you at risk of exposure to harmful substances.

5. Illustrate the safety hazard symbols for:

Attention, precaution, threat

Stop, beware, danger

Dangerous, alert, risk

The safety hazard symbols for caution, warning, and hazard are commonly used in various industries to alert individuals of potential risks and dangers in the surroundings.

Explanation

The safety hazard symbols for caution, warning, and hazard are commonly used in various industries to alert individuals of potential risks and dangers in the surroundings.