It would be 24 because they inherit half of there chromosomes from their dad and the other half from their mom<span />
Answer:
An element is a pure substance as well, because if we fill up a balloon with just helium gas ,it will only contain helium atoms
Answer:
The answer would be A because inside of an atom is protons and neutrons. Protons are + neutrons are neutral and electrons are -. The electron cloud is big not small.
Explanation:
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13 An Ionic Bond
these are the characteristics of an ionic bond compounds like NaCl have these characteristics
14 substances could be compounds or elements hence not all substances are compounds
15 It is not water. The chemical composition of water is H2O not H202
(H202 is hydrogen peroxide and is toxic)
