Answer:
His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. ... The amount of the change in velocity is determined by Newton's second law of motion.
Explanation:
A chemical reaction is a process that can lead to a change of state, the outcome of a chemical reaction can ultimately lead to the formation of a new substance.
<h3>Types of Chemical Reactions</h3>
- Synthesis reactions
- Decomposition reactions
- Single-replacement reactions
- Double-replacement reactions
- Combustion reactions.
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Answer:
Combustion reaction
Explanation:
Let's consider the following balanced equation.
CH₄ + 2 O₂ ⇒ CO₂ + 2 H₂O
This reaction is known as a combustion reaction, in which a compound reacts with oxygen to form a compound of carbon and water.
- If the product is carbon dioxide, the combustion is complete.
- If the product is carbon monoxide or carbon, the combustion is incomplete.
Answer:
Some metals can be extracted from compounds by heating with carbon atom because they are less reactive than carbon and some metals cannot be extracted because they are more reactive than carbon atom.
Explanation: If the metal is less reactive than carbon atom so the carbon atoms make bond with oxide or other atom present with metal and the metal is free from that oxide or that element. But if the reactivity of metal is higher than carbon is unable to remove the oxide or element.
Answer:
Arsenic
Explanation:
The atom that has the lowest first ionization energy is Arsenic.
The first ionization energy is the energy needed to remove the most loosely bound electron of an atom in the gas phase in the ground state.
Ionization energy generally deals with the measure of the readiness of an atom to lose an electron.
- Generally, down a group from top to bottom, ionization energy decreases because of the increasing atomic radii and increasing shielding /screening effect on the outermost shell electrons hence the electrons are held less tightly to the nucleus.
- So, nitrogen, phosphorous and arsenic belongs to the same group and arsenic will have the least first ionization energy.