Physical and Chemical Changes - 1

​Physical & Chemical Changes

LESSON - 3

1. Welcome (laptops out and get ready) - مرحبا بك (أجهزة الكمبيوتر المحمولة خارجا واستعد)

2. Class rules and digital safety - قواعد الفصل والسلامة الرقمية

3. STARTER Activity - نشاط المبتدئين

4. MAIN activity – النشاط الرئيسي

5. Exit ticket - تذكرة الخروج

Lesson instructions - تعليمات الدرس

1. ​Raise your hand if you have a question - ارفع يدك إذا كان لديك سؤال

2. Respect your teacher and other students - احترم معلمك والطلاب الآخرين

3. Focus during class and participate in all activities - التركيز أثناء الفصل والمشاركة في جميع الأنشطة

4. Stay in your seat, don’t move around - ابق في مقعدك ، لا تتحرك

​Class rules - قواعد الفصل

1. ​Use computer only for educational purpose - استخدام الكمبيوتر فقط لأغراض تعليمية

2. Do not disclose personal details on the internet - لا تكشف عن التفاصيل الشخصية على الإنترنت

3. Change your password every 90 days - تغيير كلمة المرور كل 90 يوما

4. Do not save personal photos or videos on your computer - لا تقم بحفظ الصور الشخصية أو مقاطع الفيديو على جهاز الكمبيوتر الخاص بك

5. Do not access links from an unknown person - لا تدخل إلى الروابط من شخص غير معروف

6. Do not enter forbidden websites - لا تدخل المواقع المحظورة

​Digital safety - السلامة الرقمية

Starter Activity

In the following check whether a new substance formed or not?

Multiple Choice

Breaking a glass

• New substance formed

• New substance not formed

Multiple Choice

Folding a paper

• New substance formed

• New substance not formed

Multiple Choice

Melting ice

• New substance formed

• New substance not formed

Multiple Choice

Chopping wood

• New substance formed

• New substance not formed

Multiple Choice

Cutting hair

• New substance formed

• New substance not formed

Starter Activity

In the following check whether a new substance formed or not?

Starter Activity

Are these changes reversible?

Open Ended

List five changes similar to the ones that we have seen, in which no new substances are formed and it is reversible

Multiple Choice

Small gold flakes are removed from a water solution by filtering the solution. This is an example of a _______

• physical change

• chemical change

• change of state

• change of form

Multiple Choice

Emily dropped an effervescent tablet into a glass of water. The tablet began to fizz, and tiny bubbles formed in the water.

The fizzing and bubbling are evidence that which of the following took place?

• The tablet made the water change from a liquid to a solid

• A new substance was formed when the tablet was dropped into the water

• The water turned into an effervescent solid when the tablet was dropped into the glass

• The tablet turned into liquid water when it was dropped into the glass

​A physical change alters the form of matter, but not its chemical composition.

Physical Change

​The color, shape, and size of a substance may change, but no chemical reaction occurs and no new products form

• ​Crushing a can

• Shredding paper

• Mixing sand and water

• Mixing sand and salt

• Mixing oil and water

• ​Freezing water to make ice

• Filling a bowl with different colored candies

• Mixing flour, salt, and sugar

• Chopping an apple​

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More examples of Physical change