You can define an element as a substance with only one type of atom in
(e.g. only sulphur atoms). If a substance has more than one type of atom
in, then it is either a compound or a mixture, depending on whether the
elements have bonded. Examples of elements are:
Oxygen
Sulphur
Carbon
Hydrogen
Protactinium
Compound-
A substance made up of atoms of two or more different elements joined by chemical bounds.
Molecule- a pure substance that cannot be broken down
Salt- A Ionic Compound Formed From The Reaction Of An Acid And Base .
Answer:43800 mins
Explanation:
Each hour is equal to 60 mins so multiply it with the number of hours in a month 24x30=480 then multiply it by 60 which is equal to the answer
Answer:
The answer to your question is:
Explanation:
Ion is an atom that carries out a positive or a negative charge.
It is formed when an atom loses electrons. Yes, when an atom loses electrons then is formed a positive ion.
It is usually a nonmetallic element. Incorrect. Ions can be form by metallic or non metallic ions.
It has more electrons than protons. Yes, when an atom gains electrons is formed a negative ion.
It is formed when an atom gains protons. I think is incorrect, ions are formed when they gain or lose electrons not protons.
I think c is the right answer
Answer:
155g
Explanation:
To solve this problem, we have to derive the number of moles of the element given from the number of atoms first.
Number of atoms = 3.01 x 10²⁴ atoms
From mole concept;
6.02 x 10²³ atoms is found in 1 mole of a substance
3.01 x 10²⁴ atoms of P will contain = 5moles of P
Now;
Mass of P = number of moles x molar mass
Molar mass of P = 31g/mol
Mass of P = 5 x 31 = 155g