Write an imaginary conversation between–
• solar energy and electrical energy
• sodium and copper on the basis of their reactivity
Answers
Imaginary conversation between
. SOLAR energy and electrical energy
:- solar energy
Solar energy is broadly defined as the total energy that the sun radiates through visible light and other unseen electromagnetic waves. Solar energy systems refer to any technology that converts the sun’s energy into another form of energy, such as heat or electricity. Solar energy includes passive solar systems, solar thermal systems for water or space heating, and solar power.
Solar power is a a subset of solar energy, a more narrow term that typically refers to the conversion of the sun’s rays to electricity. The two main kinds of solar power systems are photovoltaic (PV) systems, which convert sunlight to electricity directly with a semiconductor material, and concentrated solar power (CSP) systems that first convert sunlight to heat before using the heat to generate electricity.
Electrical energy
Electrical energy is a form of energy resulting from the flow of electric charge. Energy is the ability to do work or apply force to move an object. In the case of electrical energy, the force is electrical attraction or repulsion between charged particles. Electrical energy may be either potential energy or kinetic energy, but it's usually encountered as potential energy, which is energy stored due to the relative positions of charged particles or electric fields. The movement of charged particles through a wire or other medium is called current or electricity.
2.Sodium and copper on the basis of their reactivity...
:- sodium
Sodium is an element that is a member of the alkali metal group with a symbol Na. It is physically silver colored and is a soft metal of low density. Pure sodium is not found naturally on earth because it is a highly reactive metal. The sodium ion is abundantly found within the Earth's oceans, bodies of water, and many minerals. It is used for chemical synthesis, analysis, and heat transfer applications. Sodium is also a crucial element for animal and plant life by creating charge gradients and assisting in the development of energy.
Sodium was discovered and isolated in 1807 by Sir Humphry Davy. In its pure form it is silvery white and soft enough to cut with a knife. It is the sixth most abundant element in the earth's crust, occurring in large amounts in both (sea)water and soil in various mineral compounds, the most common of which is sodium chloride.
Copper
:- The metal reactivity series is a commonly taught concept in chemistry, placing the metals, as its name suggests, in order of reactivity from most reactive to least reactive. It’s also a useful tool in predicting the products of simple displacement reactions involving two different metals, as well as providing an insight into why different metals are extracted from their ores in different manners. This graphic places a selection of common metals into order of reactivity, as well as showing their reactions with air, water and steam.
Metals have a range of reactivities – to illustrate this, you have to look no further than the classic alkali metals in water demonstration commonly used in chemistry classes. In this demonstration, small pieces of three different metals from group 1 of the periodic table are dropped into a large bowl of water. Lithium fizzes gently, sodium fizzes vigorously, and potassium’s reaction is so energetic it bursts into a lilac flame as it zips across the water’s surface. Caesium, the most reactive metal in the periodic table, reacts extremely violently – hence why it can’t be demonstrated in a classroom! This can be compared to other common metals, such as iron and copper, which produce no reaction when dropped into water.