Answer:
Any characteristic that can be determined without changing the substance's chemical identity. chemical property: Any characteristic that can be determined only by changing a substance's molecular structure
Explanation:
Answer:
I don't know I'm sorry I will tell you another answer asks me to
Answer:
b) Silicon and oxygen
Explanation:
A compound is a pure substance that contains two or more atoms chemically joined together. Sand is regarded as a 'compound' because it is made up of two or more atoms that are chemically bonded to one another.
Sand is said to predominantly contain silica, which has a chemical formula of SiO2. Hence, sand can be said to be a compound containing one atom of silicon (Si) and two atoms of oxygen (O2).
Explanation:
Single covalent bonds
When an atom needs 1 electron to attain noble gas configuration they share rhe atoms in order to gain this ex ; H2 molecule
double covalent; O2 molecule
triple covalent; N2 molecule
