Answer: A
Explanation:
Hypothesis have to be based on previous knowledge and have to be able to be tested but the problem is most hypothesis can’t be explained so it’s impossible to prove a hypothesis correct because science uses inductive reasoning
Radioactivity is produced when unstable nuclei B. Break apart.
Acidic solutions turn litmus paper red.
Answer:
It becomes negatively charged
Explanation:
An atom of chlorine having equal number of protons and electrons is neutral. The protons are the positively charged particles located in the nucleus of an atom. Electrons are negatively charged particles located outside the nucleus.
When the number of electrons and protons are the same, such an atom is neutral.
If the number of protons is more, the atom becomes positively charged.
In this case, the atom adds or gains an electron making the number of electrons to go from 17 to 18. This is more than the number of protons which are 17 by 1. The charge on the atom is therefore -1.
