A pure substance is one that comprises either just one element or just one compound with nothing else mixed in. Thus:-
Distilled water is a pure substance,
Salt water is a mixture,
24 carat gold is a pure substance,
White gold is a mixture.
It's a pure substance because even though the atoms are different they still the same. If that makes sense?
If all of the molecules of the substance are the same molecule
Matter that is not a mixture of different types of Atoms. A pure substance is a collection of Matter that is comprised from [and or composed of] Atoms of only One Atomic Element.
Pure substance
A pure substance is the same throughout. When a substance is 100% something it is pure.
A pure substance is classified by having a definite and constant composition. The substance can be either an element or a compound, but what makes the substance pure, is that it does not vary.
It's a pure substance because even though the atoms are different they still the same. If that makes sense?
If there is no salt or substance that makes it impure it is a pure mixture
If all of the molecules of the substance are the same molecule
Matter that is not a mixture of different types of Atoms. A pure substance is a collection of Matter that is comprised from [and or composed of] Atoms of only One Atomic Element.
No. Sulfur dioxide is a compound, which makes it a pure substance, not a mixture.
No. To start with, air is not a pure substance, and mixiong it with something else just makes it worse.
Helium is an element which makes it a pure substance.
No. Helium is an element, which makes it a pure substance.
Only a single component makes up aluminum foil, which is the aluminum element. Hence, aluminum foil is considered as a pure substance.
It makes a mixture.
pure substance, propanone