هذا الاختبار عبارة عن مراجعة لهيكل مادة العلوم للصف العاشر العام، الفصل الدراسي الثالث لعام 2026. يغطي الاختبار مفاهيم النظرية الحركية للمادة، حالات المادة (الصلبة، السائلة، الغازية، والبلازما)، والطاقة الحرارية ودرجة الحرارة. كما يتناول التحولات بين حالات المادة وخصائص الجسيمات في كل حالة.
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يرجى الانتباه إلى أن المعلم قام بإعداد الأسئلة فقط، ولم يقم بإعداد الإجابات أو الشروحات المرفقة. وقد تم توليد الإجابات باستخدام تقنيات الذكاء الاصطناعي، لذلك قد تتضمن بعض الأخطاء أو عدم الدقة.
للحصول على الإجابات الصحيحة والمضمونة، يُرجى الرجوع إلى المعلم أو المصدر الدراسي المعتمد.
Question 1
DB question no.: 1
Points: 1
According to the kinetic theory, how do particles in matter move?
Explanation
Kinetic theory states that particles in all states of matter are in constant, random motion.
Question 2
DB question no.: 2
Points: 1
What happens to the energy of particles when they collide with one another according to the kinetic theory?
Explanation
In kinetic theory, collisions between particles are assumed to be elastic, meaning the total kinetic energy is conserved and very little energy is lost.
Question 3
DB question no.: 3
Points: 1
Which state of matter is described as having a fixed volume but not a fixed shape?
Explanation
Liquids have a definite volume but take the shape of whatever container they are in.
Question 4
DB question no.: 4
Points: 1
What is the most common state of matter in the universe?
Explanation
Plasma is the most common state in the universe, as it makes up the stars.
Question 5
DB question no.: 5
Points: 1
How do particles move within a solid state of matter?
Explanation
In a solid, the attractive forces are strong enough to keep particles in fixed positions, where they can only vibrate.
Question 6
DB question no.: 6
Points: 1
Which of the following is responsible for a solid's fixed volume and fixed shape?
Explanation
Strong intermolecular forces bind the particles closely, resulting in a definite shape and volume.
Question 7
DB question no.: 7
Points: 1
What is thermal energy?
Explanation
Thermal energy is the sum of all kinetic and potential energy of all the particles in an object.
Question 8
DB question no.: 8
Points: 1
Temperature is a measure of which of the following?
Explanation
Temperature is directly proportional to the average kinetic energy of the particles in a substance.
Question 9
DB question no.: 9
Points: 1
Where does the potential energy of particles in a substance come from?
Explanation
Potential energy is the energy stored due to the position or arrangement of particles, which is determined by attractive forces.
Question 10
DB question no.: 10
Points: 1
Which state of matter has particles with the highest energy that move freely to take both the shape and volume of its container?
Explanation
Plasma is the highest energy state of matter and, like gas, expands to fill the volume and take the shape of its container.
Question 11
DB question no.: 11
Points: 1
A student compares two containers of the same gas. Container A and Container B have the exact same temperature, but Container B contains twice as many gas particles as Container A. Which of the following statements correctly evaluates their energy properties?
Explanation
Temperature is average kinetic energy; since T is the same, average KE is the same. Thermal energy is the total energy, so more particles means more total thermal energy.
Question 12
DB question no.: 12
Points: 1
When a substance transitions from a liquid state to a solid state at a constant temperature, what happens to the internal energy components of the particles?
Explanation
During a phase change at constant temperature, the average kinetic energy remains constant while the potential energy changes as particles are rearranged.
Question 13
DB question no.: 13
Points: 1
Why does an ionized gas (plasma) require extremely high temperatures to exist compared to a normal gas?
Explanation
Plasma formation requires the ionization of atoms, which happens at extremely high temperatures where kinetic energy is high enough to strip electrons.
Question 14
DB question no.: 14
Points: 1
Which of the following scenarios best demonstrates a change in a substance's potential energy without changing its temperature?
Explanation
A phase change (melting) occurs at a constant temperature; the energy supplied goes toward increasing the potential energy by weakening intermolecular bonds.
Question 15
DB question no.: 15
Points: 1
What happens to atoms in plasma?
Explanation
Plasma is an ionized gas where high energy levels cause electrons to be stripped from atoms, creating ions.
Question 16
DB question no.: 16
Points: 1
What particles are found in plasma?
Explanation
Plasma consists of a mixture of positive ions and free electrons, which are charged particles.
Question 17
DB question no.: 17
Points: 1
What type of energy is needed to form plasma?
Explanation
The process of ionization required to create plasma requires very high energy levels to overcome atomic forces.
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