Answer:
Explanation:
Physical changes changes when objects or substances undergo a change that does not change their chemical composition.
Answer:
Substance A is a Giant covalent structure with covalent bonding
Explanation:
Substance A is a Giant covalent structure. There are strong covalent bonds between the atoms and a large amount of heat energy is needed to break the bonds resulting in high melting point. Substance A does not conduct electricity in molten state reason being, it exist as molecules which are electrically neutral and there are no mobile charged carriers.
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What is the question you need answered
False; Because when 2 substances are mixed another substance is created.
