Answer:
B
Explanation:
Isotopy is a phenomenon in which there exists two or more kind of atoms of the same element. These atoms have the same number of protons but different mass numbers. That is, they have the same atomic number but differ only by the number of neutrons in the nucleus of the atom. Now, let us apply this information to the options individually:
A. Is wrong, they are not the same element
B. Is correct. they both belong to the same element hydrogen. Infact, they are named protium and deuterium respectively
C is wrong they are not same element
D is wrong They are not elements at all
E. Is wrong, one is an element, the other is a molecule
Answer:
B.) Magma
Explanation:
Lava - Magma that reaches Earth's through a volcanic vent
Magma - Composed of molten mixture of rock-forming substances, gases and water
Batholith - Very large igneous intrusion extending deep in the earth's crust
Slurry - Semiliquid mixture, typically of fine particles of manure, cement, or coal suspended in water
Two charged atoms. This is because the atom that loses the electron will become a positively charged ion (a cation) and the one that gains that electron will become a negatively charged ion ( an anion).
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
Dissolution of solids into liquids is defined as the dissolving of solid particles in liquid.
Rate of dissolution of solids in liquids depend on 4 main factors:
1.) Temperature: Increasing the temperature means more solute can be dissolved in the given amount of solvent because the energy of the solute particles increases and more it can interact with the solvent particles. The rate of dissolution of solid also increases in liquids.
2.) Size of the solute particles: If the solute particles is present in smaller size, more it can be dissolved because this action takes place on the surface of particles and decreasing the size increases the surface area of the solute particles. Hence, increasing the dissolution.
3.) Stirring: This process brings fresh solvent particles to come in contact with the solute particles and hence, fast stirring increases the rate of dissolution.
4.) Amount of solute already present in solvent: If more amount of solid is already present in the solvent, the dissolution rate decreases.
From the above information, the correct answer is Option B.
