Good Science Victorian Curriculum Year 7

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SCIENCE SKILLS 1.1 SAFETY IN SCIENCE Figure 1.1 It’s important to know where the eye wash station is in your school’s science lab. Figure 1.2 Safety glasses and rubber gloves reduce risk in the laboratory. 1 Safety is critical in science, because all investigations carry some degree of risk. From using a Bunsen burner to dissecting a sheep heart, things can go wrong if we don’t plan and act in a safe manner. Get to know good safety practices Whenever you step into the lab for an investigation, it’s important to identify hazards and use good safety practices to control the risk of them causing harm. How many safe practices can you identify in the image below? Use each practice that you identify to make a safety rule for working in science. It’s important to know about these safety tools and materials in the science lab: • Safety glasses and shields protect your eyes from fumes, particles and irritants. • Lab coats and aprons protect your clothes and body from chemical spills, flames and other dangers. • Gloves and hand protectors protect your hands when handling chemicals, biological materials and sharp objects. • Fire extinguishers use dry chemicals (not water) to put out the flames if there is a fire. • Eye wash stations are used if you get something in your eye. Never rub your eye – use the eye wash station to wash it instead. • Laboratory hoods, also called fume hoods, are like exhaust fans in your bathroom or kitchen, removing gases and fumes. What are the uses of three pieces of laboratory safety equipment? 4 GOOD SCIENCE VICTORIAN CURRICULUM 7
CHAPTER 1: SCIENCE SKILLS 2 Get to know Bunsen burner safety A Bunsen burner is a common piece of scientific equipment and is most often used for heating things in the science laboratory. Learning how to set up and safely use a Bunsen burner is extremely important. Misuse can result in severe burns or gas leaks. A Bunsen burner can operate two main flames: the safety flame and the heating flame. The safety flame is an orange flame and reaches temperatures of about 300ºC. That sounds like a lot, but the heating (blue) flame reaches temperatures of about 1500ºC! Figure 1.3 The Bunsen burner is used to safely generate a flame for heating things in the lab. Gas hose Collar Barrel Air hole Base KEY TERMS Bunsen burner a piece of equipment used in science that produces a single open gas flame hazard something that can harm living things, objects or the environment heating flame the blue (very hot) flame of a Bunsen burner (approx. 1500ºC), used for heating substances risk the chance that a hazard will cause harm safety flame the orange (cooler) flame of a Bunsen burner (approx. 300ºC), used between heating substances SETTING UP AND LIGHTING A BUNSEN BURNER 1 Place a heatproof mat on the lab bench, place the Bunsen burner on top and connect the gas hose tightly to the gas tap. 2 Turn the collar of your Bunsen burner so that the air hole is closed. 3 Time for the safety check! Make sure long hair is tied back, safety glasses are on, you know the location of the fire extinguisher and blanket, and then check the gas hose for any cracks, holes or tears. 4 Ask your teacher to check the set-up of your Bunsen burner and provide any feedback. 5 The lighting of the Bunsen burner is best done by two people. Ask a lab partner to get ready to turn the gas tap on. 6 Light your match or taper before the gas tap is turned on and position it over the top of the barrel. 7 Ask your lab partner to turn the gas tap on. 8 Your Bunsen burner should now be lit. Move away from the burner and extinguish the match. How hot is the orange flame of a Bunsen burner, and how hot is the blue flame? AFTER YOUR BUNSEN BURNER IS ALIGHT, CALMLY TAKE THE MATCH OR TAPER AWAY FROM THE BURNER. SHAKE OR BLOW THE FLAME AWAY FROM THE BURNER. IF YOU BLOW THE FLAME OUT NEAR THE BUNSEN BURNER, YOU RISK BLOWING OUT THE BURNER FLAME TOO. IF THIS HAPPENS, CALMLY TURN OFF THE GAS VALVE AND START AGAIN. 5
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Page 5 and 6: MAKE EVERY LESSON A GOOD LESSON
Page 7 and 8: Chapter 5 Mixtures . . . . . . . .
Page 9 and 10: VICTORIAN CURRICULUM SCIENCE LEVELS
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CHAPTER 4: STATES OF MATTER 2 3 The
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CHAPTER 4: STATES OF MATTER 2 3 Sub
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CHAPTER 4: STATES OF MATTER 2 3 Liq
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CHAPTER 4: STATES OF MATTER 2 3 4 L
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CHAPTER 4: STATES OF MATTER 2 3 Den
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CHAPTER 4: STATES OF MATTER FINAL C
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CHAPTER 5: MIXTURES 3 SEE-KNOW-WOND
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CHAPTER 5: MIXTURES 2 3 Mixtures ar
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CHAPTER 5: MIXTURES 3 4 Solutions a
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CHAPTER 5: MIXTURES 2 3 Water is a
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CHAPTER 5: MIXTURES 2 3 Filtration
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CHAPTER 5: MIXTURES 2 Magnets are u
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CHAPTER 5: MIXTURES 2 Distillation
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CHAPTER 5: MIXTURES 2 3 A separatin
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CHAPTER 5: MIXTURES 2 Sewage is pro
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CHAPTER 5: MIXTURES 3 Oil spills ca
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CHAPTER 5: MIXTURES FINAL CHALLENGE
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CHAPTER 6: EARTH, THE SUN AND THE M
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CHAPTER 7: EARTH’S RESOURCES 23 S
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CHAPTER 7: EARTH’S RESOURCES 3 no
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CHAPTER 7: EARTH’S RESOURCES 3 Ro
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CHAPTER 7: EARTH’S RESOURCES 3 4
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CHAPTER 7: EARTH’S RESOURCES Figu
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CHAPTER 7: EARTH’S RESOURCES FINA
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CHAPTER 8: FORCES 3 SEE-KNOW-WONDER
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CHAPTER 8: FORCES 3 What would happ
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CHAPTER 8: FORCES 2 We can predict
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CHAPTER 8: FORCES 2 The direction o
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CHAPTER 8: FORCES 2 3 Kinetic frict
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CHAPTER 8: FORCES 2 Other forces in
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CHAPTER 8: FORCES Imagine a mattres
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CHAPTER 8: FORCES 3 On the surface
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CHAPTER 8: FORCES Figure 8.10 The f
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CHAPTER 8: FORCES 2 3 Pulleys redir
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CHAPTER 8: FORCES FINAL CHALLENGE 1
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INVESTIGATIONS KEY SKILLS Writing a
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INVESTIGATIONS Investigation 2.2 Su
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INVESTIGATIONS Investigation 2.6 Gr
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INVESTIGATIONS Investigation 3.2 Mo
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INVESTIGATIONS Investigation 4.1 Co
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INVESTIGATIONS Investigation 4.3 Ex
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INVESTIGATIONS Investigation 4.5 Ex
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INVESTIGATIONS METHOD 1 Copy the re
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INVESTIGATIONS RESULTS 30 min Level
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INVESTIGATIONS Investigation 5.6A E
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INVESTIGATIONS Investigation 5.6C D
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INVESTIGATIONS Investigation 5.7B S
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INVESTIGATIONS Investigation 6.2 Mo
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INVESTIGATIONS 30 min Level 2 TO MO
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INVESTIGATIONS Investigation 7.1 Cl
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INVESTIGATIONS Investigation 7.3A D
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INVESTIGATIONS Investigation 7.4 Th
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INVESTIGATIONS Investigation 8.1 Pu
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INVESTIGATIONS Investigation 8.4 He
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INVESTIGATIONS Investigation 8.6 Me
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INVESTIGATIONS METHOD 1 Copy the re
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INVESTIGATIONS Investigation 8.9B I
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fractional distillation a method th
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INDEX Aboriginal and Torres Strait
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photosynthesis 30, 31, 36, 42, 109
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Good Science Victorian Curriculum Year 7

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