Class Science Journal Term 1: Melting Moments

Melted Object 1 What do you think this is? Do you think it always looked like this? Why do you think it looks like this now?

Melted Object 2 What do you think this is? Do you think this always looked like this? Why do you think it looks like this now?

Look at the un-melted objects… In what ways are they similar? In what ways are they different?

MELT/FREEZE What things have you seen melting/freezing? Why do things melt? What is happening when things melt/freeze?

MELT/FREEZE When do you want things to melt/freeze? Do you have any questions about melting and freezing?

Heat It Up We are going to explore what happens when things are heated. What do you think might happen? Chocolate buttons Plastic spoon water

Heat It Up Where could we put the samples? What words could we use to describe the materials? E.g. hot, cold, runny, hotter…

Science Groups Tyler Ryan Lachlan K Charli Dominic Sebastian Lachan For lesson 2 Charli Dominic Sebastian Lachan Chloe Kiara Olivia Zara Bryce Josiah Brenden Lana Tyler Ryan Lachlan K Jasper Luke Dylan Adelie Thomas Mitchell Kate Nicole Rhyan Patrick

Director Speaker Manager Move into your teams quickly and quietly. Collects and returns all materials the team needs Makes sure that the team understands the team investigation and completes each step Asks the teacher and other team speakers for help Manager - Director – encourage and support Speaker – NOT the only person who will report back – ALL team members need to know what is going on Move into your teams quickly and quietly. Speak softly. Stay with your team. Perform your role. Take turns.

Heat It Up Scientists call all things that are runny ‘liquids’ all things that keep their shape ‘solids’

Cool customers Lesson goals To work in teams and observe what happens when different materials are cooled Create a storyboard to explain what has been happening to their materials

Cool customers Q. What happened to the materials when they were placed in the refrigerator? 1._______________________________________ 2._______________________________________ 3._______________________________________

Cool customers We will create a storyboard using what we observe and information we already have. Use the ‘before and after’ drawings from the resource sheet ‘Heat It Up’. Draw a third square labelled ‘ After freezing’. Leave space for a fourth square.

Cool customers Predict what might happen if the materials are placed in the freezer. Record your predictions under the storyboard.

Cool customers What happened to the chocolate when it was heated? ______________________________________________ Why do you think it no longer had the same shape? ______________________________________________ What happened when the chocolate was cooled again?__________________________________________ ____ How could you create chocolates in the shape you want? ______________________________________________ Why didn’t the spoon change shape like the chocolate? _______________________________________________

Cool customers Q. What will happen to the materials when they are placed in the freezer? 1._______________________________________ 2._______________________________________ 3._______________________________________

Cool customers Q. What will happen to the alcohol-based liquid when it is placed in the freezer? _______________________________________

Freeze It! Goals. To work in teams to observe what happens when different materials are placed in a freezer. Play a game of ‘freeze’ and discuss the terms ‘freeze ‘ and ‘melt’ Review and complete storyboards.

Freeze It! Which materials became solids? _________________________________________ Which materials stayed liquid? _________________________________________ Did your results match your predictions? Why? Why not? _________________________________ What else did you notice? ___________________ What does the term ‘ frozen’ mean? _____________

Freeze It! Scientists say that materials ‘freeze’ when they change from liquid to solid.

Sometimes solid Learning goals: To role play materials freezing and melting Create a table identifying when materials are either solid or liquid Identify that adding heat can change solid materials to liquids and removing heat can change liquid materials to solids.

Sometimes solid What are the differences between solids and liquids? How would you act on the solids side of the rope? Liquid side?

Sometimes solid ‘Solid or liquid ?’ table Material Freezer Refrigerator Room Temperature Warm place water honey chocolate metal plastic Rubbing alcohol

Sometimes solid Where are the materials the hottest? Where are the materials the coldest? When are the materials liquids? When are the materials solids? What can this tell us about what happens when we add heat to a material? What can this tell us about what happens when we remove heat from a (cool) material?

Sometimes solid Can the metal and plastic materials become a liquid? http://www.bbc.co.uk/schools/scienceclips/ages/8_9/soli d_liquids.shtml Scientists explain that almost all solid materials become liquids at different times. Alcohol can become a solid to liquid at low temperatures . Review class descriptions of solid, liquid, melt and freeze. Note: Changing materials from solid to liquids changes the shape of objects.