Which laboratory apparatus is mainly used to measure temperature?, Thermometer, Balance, Beaker, Funnel, Which apparatus is best for measuring the volume of a liquid accurately?, Test tube, Mortar and pestle, Beaker, Graduated cylinder, A scientist wants to add a liquid one drop at a time. Which apparatus should be used?, Balance, Microscope, Dropper, Funnel, Mia wants to measure exactly 25 mL of water and then pour it into a container. Which apparatus should she use to measure the water?, Mortar and pestle, Graduated cylinder, Beaker, Test tube, Leo finds a tiny object that he cannot see clearly with his eyes. He needs to observe details that are too small to see clearly with the unaided eye. Which apparatus is most suitable?, Balance, Thermometer, Funnel, Microscope, Four students need different laboratory tools. Student Task: W - Measure the mass of a rock X - Measure the temperature of water Y - Crush a solid into powder Z - Transfer liquid drop by drop Which set correctly matches the students with their apparatus?, W–Balance, X–Thermometer, Y–Mortar and pestle, Z–Dropper, W–Balance, X–Funnel, Y–Beaker, Z–Microscope, W–Thermometer, X–Balance, Y–Dropper, Z–Mortar and pestle, W–Beaker, X–Thermometer, Y–Balance, Z–Funnel, Ana and Ben both have water. Ana needs to hold and mix the water with another substance. Ben needs to measure exactly 40 mL of water. Which apparatus should they choose?, Ana—dropper; Ben—test tube, Ana—graduated cylinder; Ben—beaker, Ana—beaker; Ben—graduated cylinder, Ana—funnel; Ben—beaker, A student must: Step 1: Measure 30 mL of water accurately. Step 2: Measure its temperature. Step 3: Add another liquid drop by drop. Which sequence of apparatus is best?, Balance → Graduated cylinder → Spatula, Graduated cylinder → Thermometer → Dropper, Test tube → Microscope → Funnel, Beaker → Balance → Funnel, What is the main purpose of a laboratory warning sign?, To decorate the laboratory, To tell us about a possible danger, To show where experiments begin, To tell us the name of the scientist, A container has a 🔥 Flammable sign. What does the sign mean?, The material can be eaten safely., The material must be frozen., The material can catch fire easily., The material is safe to heat., You see a 🥽 Wear Safety Goggles sign before an experiment. What should you do?, Put on safety goggles to protect your eyes., Cover your ears., Wash the goggles with chemicals., Stay away from all laboratory equipment., Leo sees an ⚡ Electrical Hazard sign near a piece of equipment. His hands are wet. What is the safest action?, Pour more water near the equipment., Touch the equipment quickly., Ask a friend to touch it instead., Dry his hands and wait for the teacher's instructions., A bottle has a 🧪 Corrosive warning sign. A few drops accidentally spill on the laboratory table. What should Mia do first?, Smell the liquid closely., Tell the teacher immediately., Wipe it with her bare hands., Touch the liquid to find out what it is., Four students see a ♨️ Hot Surface sign. A. Ana waits for the teacher before touching the object. B. Ben keeps his bare hands away from the hot object. C. Cara touches the object quickly because it does not look hot. D. Dan follows the teacher's safety instructions. Who is NOT following the meaning of the warning sign?, Ben, Ana, Dan, Cara, Which is an example of a chemical change?, Freezing water, Melting an ice cube, Rusting an iron nail, Cutting paper into pieces, What usually helps an iron nail rust?, Oxygen and water, Salt and sugar, Sugar and sunlight, Oil and plastic, Which change does NOT form a new substance?, An egg cooking, An ice cube melting, An iron nail rusting, An apple turning brown, Mia mixes vinegar and baking soda. The mixture quickly begins to fizz. What is the best explanation for the bubbles?, Air is changing into water., The baking soda is turning into oxygen., Carbon dioxide gas is being produced., The vinegar is freezing., Study the observations. Change: P - Ice becomes liquid water. Q - An egg becomes firm when cooked. R - Water becomes ice. S - A cut apple becomes brown. Which pair shows chemical changes?, P and Q, R and S, P and R, Q and S, What is an element?, A pure substance made of one kind of atom, A mixture of many different materials, Anything that can be changed into water, A substance that is always a solid, What is the Periodic Table?, A table showing only chemicals found in laboratories, A list of liquids and gases, A chart that organizes the elements, A chart showing only metals, Which statement best describes a metal?, It is always soft and easily broken., It cannot conduct heat., It must always be a gas., It is often a good conductor of heat and electricity., Which of the following is a metal?, Copper, Oxygen, Nitrogen, Carbon, Which element is a nonmetal and a gas that humans need for breathing?, Copper, Oxygen, Gold, Aluminum, Which pair contains two noble gases?, Iron and copper, Helium and neon, Oxygen and nitrogen, Carbon and sulfur, Ella notices that a soft-drink can is light but strong enough to hold a drink. Which metal is commonly used to make such cans?, Oxygen, Neon, Carbon, Aluminum, Carlo sees a balloon filled with a gas that is lighter than air. Which element could be inside the balloon?, Helium, Carbon, Copper, Iron, A food maker adds a substance to a jar of food. The substance helps slow spoilage, so the food can stay good for a longer time. What word best describes the job of the substance?, Sweetener, Thickener, Preservative, Coloring, Lia forgot a container of food for several days. Later, she noticed an unpleasant smell, a change in appearance, and signs that the food was no longer good to eat. Which term best describes what happened?, Freezing, Flavoring, Preservation, Spoilage, Scientists use H₂O as the chemical formula for a substance we use every day for drinking, washing, and cooking. What does H₂O represent?, Carbon dioxide, Salt, Water, Oxygen

Session 4: Primary 2

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