A solid is characterized by structural rigidity and resistance to a force applied to the surface a solid object does not flow to take on the shape of its container nor does it expand to fill the entire available volume like I gas
Answer:
1. Animals are multicellular.
2. Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances.
3. Animals typically reproduce sexually.
4. Animals are made up of cells that do not have cell walls.
5. Animals are capable of motion in some stage of their lives.
6. Animals are able to respond quickly to external stimuli as a result of nerve cells, muscle or contractile tissue, or both.
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Explanation:
Cu, Na and Nd are all elements.
A compound consists of at least 2 different elements.
Calcium chloride (CaCl2) consists of calcium and chlorine atoms, therefore it is a compound.
The reaction of sodium and chlorine to form salt has the following properties:
1- It gives out (releases) heat. This means that it is an exothermal reaction
2- A new compound is formed and the components of this compound cannot be separated by physical means. This means that a chemical change occurred.
Based on this:
The reaction of sodium and chlorine to form salt is best described as an<span> exothermic chemical change reaction.</span>