YR1_T1_LSN2

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

Get ready:

• Your laptop (join the lessonup)
• Your notebook.
• Your textbook.
• Your lab journal
• Pen & highlighter

Homework for today:

• Discuss the homework exercises in your groups. 
• If you cannot work it out in your group you can ask me questions. 

Answers:

1. Observing means noticing something by using one or more of your senses: looking, touching, smelling, hearing, tasting.
2. Tools that a scientist uses: weighing scales, a microscope, a ruler, a thermometer.
3. A substance is anything that has mass and takes up space. Substances are physical things that can be touched, seen, observed or measured.
4. Examples of properties of a substance: appearance (how it looks), phase at room temperature (solid, liquid or gas), color, smell, taste and texture
5. Something that is NOT a property of substances: mass, volume and temperature.

Answers:

6. Water and rubbing alcohol are different in taste and smell. Water and rubbing alcohol are both liquid and are both transparent.
7. Something that cannot be classified as a substance does not have mass and does not take up space. For instance: vacuum, music, love, a shadow.
8. Two properties of:
a. bleach: strong smell, yellow color, liquid (at room temperature)
b. candle wax: smooth texture, solid (at room temperature) 
c. olive oil: yellow color, liquid (at room temperature)
d. Paracetamol: solid, white, smell

Answers:

• 9. Ice and water are the same substance, because at room temperature it is always liquid. 
• 10. What could Tom do to keep water, ammonia and cleaning vinegar apart:
• a. He could smell each bottle.
• b. He did use odor as a substance property.
• 11. What metal is more desirable for planes:
• a. Aluminum is desirable for planes as it is strong and also light weight.
• b. Lead is not desirable as it is very heavy.
• 12. How could Sam separate rice from salt:
• a. Sam could take the rice and salt mixture, and put it in water. The salt will dissolve in the water, and the rice will not. Then he could let the rice sink to the bottom and take the salt-water out. Sam could also use a strainer so the rice would stay in the strainer and the salt would fall through.
• b. He uses two properties: (i) that salt is soluble in water and rice is not, and (ii) rice is ‘heavier’ and water, and will sink to the bottom. If he uses a strainer he is using the property of particle size.

Topic 1: Observing the World

LESSON 2

DATE:

Learning Goals:

1.

2.

Key words:

1.

2.

3.

4.

5.

6.

Summary of the day:

1.

2.

Learning Goals:

• I can convert between different units in the metric system
• I know the names of the most common lab materials and what they are used for
• I know the lab safety rules and safety symbols
• I know where to find the different safety materials in the lab

Key words:

• lab safety
• measuring equipment
• metric system
• safety symbol

Units:

• One of the best ways to learn about a substance is to measure it in some way.
• When we measure it we put it into units. 

Going to the lab:

• Always be properly protected. This includes wearing safety glasses and lab coat plus tying back long hair.
• Do not eat or drink anything in the lab
• No running or fooling around --> 1 warning and you are out
• Follow the instructions given for the experiment. 
• If you are in doubt about what you should do then always ask your teacher or the lab technician for help.

Lab time:

• Read the instructions carefully.
• Discuss in your group what you think you need to do
• Follow your teacher's instructions carefully. 
• Bring your worksheet & lab journal to the lab.

Lab time:

• Work per island
• When the timer goes move clockwise through the classroom

Homework for lessons:

• Complete the exercises on page 14 & 16.
• Review your notes from today.
• Study the glossary of topic 1.2 in StudyGo

Learning Goals:

• I can convert between different units in the metric system
• I know the names of the most common lab materials and what they are used for
• I know the lab safety rules and safety symbols
• I know where to find the different safety materials in the lab