Chemistry

[IAT-STUDENT]

السلام عليكم ورحمة الله وبركاته


شباب بنات بليز ابي مساعدتكم في حل اسئلة الكمستري لاني كنت غايب ومب فاهم شي وان شاء الله استفيد منكم

والحين نبدا

1-Could two objects with the same volume have different masses? Which, if either, would con-tain more matter?

2-What it meant by pure matter?

3-What is energy? What part does it play in chemistry?

4-Distinguish between exothermic and endother-mic reactions, and give an example of each.

5-How is a qualitative observation different from a qualitative observation? Give an example of each.

6-Explain how mixture is diferent from a compound.

7-what are the two main classes of matter?

8-Define the term mixture.

9-To what three classes on the diagram does vinegar belong?

10-Compare and contrast pure substance and solutions.

11-What are the two classes of pure substance? How do they differ?

12-How are substance related to mixtures?

13-Are compounds mixtures? Use the diagram to explain.

14-Which is the more general classificayions, elements or pure substance? Explain

15-Classify each of the following as an element, compound, homogeneous mixture, or heterogeneous mixture: salt water, hydrogen, oil and water, sodium chloride.

والسموووحه اذا طولت عليكم بس بليز والله محتاي اجوبتهم لان عندي كوز

انا مب فاهم لاني اتاخرت في الدوام مب تعتقدون اني مب شاطر نو هع

المهم بليز الكل يحلهم لي اولاد وبنات كلنا اخوان