Answer:
Explanation:
synthesis reaction have 2 or more reactants and produce only 1 product.
Example
2 Na + S --> Na2S
Decomposition reactions are the opposite. they have 1 reactant that is broken down into 2 or more products
Na2S ---> 2 Na + S
The first element of the periodic table is hydrogen (H), and the second element is helium (He).
Hydrogen, with atomic number 1, is the first element in the periodic table. It is the lightest and the most abundant element in universe. Hydrogen is a colorless, odorless gas and is the building block for all other elements.
Helium, with atomic number 2, is the second element in the periodic table. It is also a gas, but unlike hydrogen, it is inert and does not readily react with other elements. Helium is known for its low density, which makes it lighter than air, and it is commonly used for filling balloons and as a cooling medium in various scientific and industrial applications.
So, the first element of the periodic table is hydrogen (H), and the second element is helium (He).
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b. neutron.
c. proton.
d. nucleus.
Answer:
The central portion is called neutron.
Explanation:
An atom has a central part known as nucleus and outer shells.
The central nucleus contains protons (the positively charged sub atomic particle) and neutrons (the neutral sub atomic particle).
The outer portion has negatively charged sub atomic particle known as electrons.
The atomic number of an element is the number of protons present in the nucleus.
Answer:
The Answer is Nucleus
Explanation:
The Nuleus is the brain of the atom always like the "boss"
A solution can exist in three phases: solid, liquid and gas, depending on the temperature and pressure. The pH of the solution can also change based on the nature of ions present in it. Understanding the nature and properties of solutions is crucial for many chemical reaction processes.
A solution can exist in three phases depending on the temperature and pressure, which are: gas, liquid, and solid. These are depicted in a phase diagram (an illustrative depiction that shows the states of a substance under different conditions of temperature and pressure).Consider the phase diagrams for a pure solvent and a solution. When a nonvolatile solute is dissolved in a solvent, a solution is formed. These states coexist and are in a state of thermal equilibrium at specific combinations of pressures and temperatures.
In addition to the physical phase, the pH of the solution can also be considered as a 'phase.' The pH can decrease, increase, or even show a pattern of increase and then decrease depending on the nature of ions present in the solution.
Solutions are crucial to life-sustaining processes as well as other chemical reaction processes. It's important to know the nature of solutions and factors determining its formation and properties for understanding various biological, geological and industrial processes.
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