A pure chemical substance
Explanation:
A pure substance is any substance made up of only one kind of matter and has definite properties.
Matter is anything that has weight and occupies space
On a broad basis, matter can be categorized as pure or distinct substances and impure substances or mixtures.
Pure substances have the following properties;
- All parts of a pure substance remains the same throughout i.e homogeneous.
- Their composition is definite
- They cannot easily be broken or separated down into simpler substances by physical means.
They have a unique set of chemical properties.
Pure substances are elements and compounds.
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Heterogeneous mixtures brainly.com/question/1446244
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Answer:
This is not a redox reaction. None of the species are reduced and none are oxidized
Explanation:
In a redox reaction at least one species must be oxidized and another reduced. You see this by a change in oxidation number. In this question the oxidation numbers are the same before and after the reaction.
Ca 2
H -1
Na +1
I -1
Answer:
<h3>Reactivity is the ability of matter to react chemically with other substances. Flammability is the ability of matter to burn.</h3>
Melting gold bars is the process that involves an increase in entropy
Answer:
Explanation:
a) 2 chloro butane
b) 2-3 dimethyl butane
c) 2 bromo 3 nitro pentane
d) 2-3 trimethyl pentane
e) 2-bromo,3-methyl,4-nitro hexane
f) 2-methyl cyclo butane
