ما هي الجزيئات المكونة للذرة؟
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ما هي الجزيئات المكونة للذرة؟
demandé 29 mai 2023 17:12  incognito 16 13 gold badges 13 silver badges 19 bronze badges |
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0 | الذرة هي أصغر جزء من جسم بسيط يمكن أن تتحد كيميائيًا مع الآخرين لتكوين مادة. على سبيل المثال ، يتكون الماء النقي من ذرتين هيدروجين وذرة أكسجين. في كوب من الماء يوجد بلايين من مليارات الذرات. الذرات هي المكونات الأساسية لجميع المواد الصلبة والسائلة والغازية. يتم تحديد الخصائص الفيزيائية والكيميائية لهذه المواد من خلال الذرات التي تتكون منها وكذلك من خلال الترتيب ثلاثي الأبعاد لهذه الذرات. تحدد الخصائص الكيميائية للذرات من خلال تكوينها الإلكتروني ، المشتق من عدد البروتونات في نواتها. هذا الرقم ، المسمى بالرقم الذري ، يعرف العنصر الكيميائي. الذرة عبارة عن نواة تقريبًا تتكون من البروتونات والنيوترونات التي تنجذب حولها الإلكترونات بعيدًا. إذا قمنا بتكبير النواة إلى حجم كرة بينج بونج ، فإن الإلكترون الأصغر من حبة الرمل سينجذب بضعة كيلومترات من كرة بينج بونج. يؤدي هذا إلى جعل معظم حجم الذرة فارغًا. answer 29 mai 2023 17:50 Jilani 0 0 gold badges 0 silver badges 0 {% trans "bronze badges" } |
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