Answer: Compound . Chemical reactions can divide elements into simpler substances, but they cannot separate elements into simpler substances. Physical or chemical characteristics of substances can be categorised.
Compounds and elements can be created from pure substances. A chemical reaction is required to break down pure substances (elements and compounds) into their component atoms or elements. This is known as the chemical separation process. Physical separation of pure substances is impossible.
Explanation:
What makes something pure substance?
One element or a small number of related compounds make up pure substances. Mixtures are assemblages of many components. Mixtures of two or more substances (or elements) that cannot be visually distinguished from one another are referred to as homogeneous mixtures.
What sort of compound would that be?
A substance made up of two or more components is called a compound. Table salt, water, and carbon dioxide are a few examples of compounds
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Answer: option a: 1,1,1
Explanation:
1) The chemical equation given is wrong. This is the right chemical equation
<span>CaCO3(s) → CaO(s) + CO2(g)?
2) To balance you start by counting the number of atoms of each element on both sides
element number of atoms conclusion
reactant side product side
Ca 1 1 balanced
C 1 1 balanced
O 3 1+2 = 3 balanced
3) Therefore all the elements are balanced and the coefficients are 1, 1, and 1.
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Answer:She can investigate all of them
Explanation:
Maybe not the elephant and mouse
Answer:
A..............................