A. What are the
B. What are the properties of an element?
C. What are the properties of a compound?
What's New
the properties
and
activity we identified
of a compound
In the previous
clenrent.
Identify some elements and compounds mentioned in a poem using the given
set of properties? Write your answer in a separate
sheet of paper.
ELEMENTS
COMPOUNDS
plsss help me to answer this question
Answers
Answer:
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Explanation:
A compound is a substance formed when two or more chemical elements are chemically bonded together. The elements in any compound are always present in fixed ratios. Example: Pure methane is a compound made from two elements - carbon and hydrogen. The ration of hydrogen to carbon in methane is always 4:1. The properties of a compound are different from the properties of its constituents
Properties of an element are sometimes classed as either chemical or physical. Chemical properties are usually observed in the course of a chemical reaction, while physical properties are observed by examining a sample of the pure element. The chemical properties of an element are due to the distribution of electrons around the atom's nucleus, particularly the outer, or valence, electrons; it is these electrons that are involved in chemical reactions. A chemical reaction does not affect the atomic nucleus; the atomic number therefore remains unchanged in a chemical reaction.
Some properties of an element can be observed only in a collection of atoms or molecules of the element. These properties include color, density, melting point, boiling point, and thermal and electrical conductivity. While some of these properties are due chiefly to the electronic structure of the element, others are more closely related to properties of the nucleus, e.g., mass number.