Answer:
D.
The concentration of reactants and the concentration of products are constant.
Explanation:
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When your substance either; change color, start to smell, explode, form bubbles, precipitate, and/or get hotter or colder.
Answer: Positive charge
Explanation:
An atom consists of electron (negatively charged), Proton (Positively charged) and neutron (no charge).
The proton (+) and the neutron (no charge) are in the nucleus of the atom. this makes the resulting charge of the nucleus positive while electron (-) is outside the nucleus.
