Are pure substances just chemically bonded substances? (1 Viewer)

[Fiction]

Are pure substances just chemically bonded substances? I've always thought pure implied one element only or like one thing for lack of a better word.

Thankies in advance

EDIT:
Also, are minerals crystalline compounds? Also what exactly encompasses being a crystalline compound? Can't seem to find answer on google //shot

DOUBLE EDIT:
for the spheres of the earth - hydrosphere is defined in my notes as any water bodies. I was just wondering if that means a puddle of water is also classified as within the hydosphere? What about a drop of water? Like is there a size limit on the body of water?

 

[Fiction]

Just to clarify: are you asking for the examples of pure substances (i.e. elements and compounds) or their actual features?

Not asking for examples of pure substances, am trying to understanding what pure substances incorporate Like a fundalmental definition, since I can't find it on google //shot

In my notes, my idiot self of a few months back seems to be implying that pure substances = just chemically bonded substances

 

[Fiction]

From what I understand, a pure substance is a sample of matter with both definite and constant composition with distinct chemical properties.

Explain definite composition? Like a set ratio?

If you have time, can you have a look at my first post - I put up more questions OTL

 

[QZP]

Not asking for examples of pure substances, am trying to understanding what pure substances incorporate Like a fundalmental definition, since I can't find it on google //shot

In my notes, my idiot self of a few months back seems to be implying that pure substances = just chemically bonded substances

Really? I just googled it and first thing that comes up for pure substance is a substance consisting of only one type of element or molecule

 

[Fiction]

Really? I just googled it and first thing that comes up for pure substance is a substance consisting of only one type of element or molecule

But water is apparently a pure substance (according to KISS booklets). alsdkfjafd I'm getting contradictory info here.

lol I literally googled, "Are pure substances just chemically bonded substances" and "crystalline compound". Lack of sleep is getting to me. //shot

 

[Fiction]

Really? I just googled it and first thing that comes up for pure substance is a substance consisting of only one type of element or molecule

In a nutshell, a pure substance is any single type of material.

A substance can be anything. It doesn't have to consist of a single element or type of molecule. Pure hydrogen is a pure substance. So is pure honey,

^ from http://chemistry.about.com/od/moleculescompounds/f/What-Is-A-Pure-Substance.htm
It's confusing - can anyone explain? The website seems to be implying that anything that is uncontaminated is pure - including homogenous mixtures.

 

[Queenroot]

A pure substance is not a mixture.
Oxygen Gas is a pure substance, air is not.
Water is a pure substance, Seawater is not.

It can be an element or molecule, doesn't matter which, the substance as a whole has to be homogenous.

 

[someth1ng]

Fiction, pure honey isn't a pure substance because it is a mixture. A pure substance is something that contains only 1 compound. Example, pure water is just only H2O so it's a pure substance. Another one is NaCl because NaCl is a particular compound and it contains nothing else. Another one is CH4 by itself - with nothing else.

So really every compound when alone, is a pure substance.

 

[saif1788]

Matter is classified into:
A) Pure Substances:
1. Elements
2. Compunds (Fixed ratios of elements)

B) Impure Substances (Mixtures):
1. Homogeneous (Evenly distributed, like salt in water and wine).
2. Heterogeneous (Not evenly distributed, sand in water settles).