They are both true glad i could help
The statement that is true for most chemical reactions is that A. An energy change occurs during the breaking and forming of chemical bonds. As the reactants react ultimately producing products the atoms of the respective elements within the compounds if present will break and reform ultimately to produce the products, during this change energy transformation from chemical bond formation and breakage occurs, and allows one to determine whether or not a reaction releases energy or needs a substantial amount of energy based on the energy content of the reactants and products.
Answer:
B
Explanation: Lithium, sodium, and potassium, etc. all react with water
Answer:
a) Secretion of unpleasant liquids which make them distasteful.
Possession of spines or thorns or irritating hairs which cause pain or irritation on contact.
Possession of poisonous parts which cause pain or itching or death or swelling on contact.
b) An anion is a negatively charged atom (or group of atoms).
OR
An anion is an ion formed when an atom (or group of atoms) gain electrons.
c) i. NH4OH and dilute HCL.
= Ammonium chloride, water
ii. CACO3 and dilute HCL.
= Calcium chloride, water, carbon dioxide or carbon (IV) oxide.
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