Answer:
When an element loses an electron, its oxidation number increases.
Explanation:
The oxidation number of an element indicates the hypothetical charge of an atom in a compound. It is hypothetical because, in the context of a compound, the elements may not necessarily be ionic. When the number of electrons associated with an atom changes, its oxidation number also changes. When an element loses an electron, its oxidation number increases.
Answer:
I would suggest the answer D: A paint manufacturer
Answer: A substance that produces hydroxide ions when placed in water is base.
Explanation:
Bases are the substance:
- Which gives negatively charged hydroxide() ions in aqueous solution.
- Which have pH value ranging from 7 to 14.
Where as acid gives positively charged hydronium ion() in aqueous solution.
Compounds are not possible to be separated by physical means
Answer:
- Elements of the the same group have similar number of valence electrons.
- They have identical number of electrons in their outermost shell. For example ; All the alkali metals in Group 1 have 1 valence electron.
And so many more.
Due to all these similarities ,they have similar properties and they tend to react similarly with other substances.
Explanation: