Question

HELP!

CO2
NaCl
HCl
These may all be classified as


A)
elements and compounds.


B)
elements and molecules.


C)
elements and pure substances.


D)
compounds and pure substances.

Answer 1

B , i guess. Coz
Elements are formed from pure atoms of the same kind and molecules are formed when two elements are mixed together .

Answer 2

hey @Areebah the answer is D

Answer 3

because none of them is a element

Answer 4

Pure substances are defined as substances that are made of only one type of atom or molecule

Answer 5

these are molecules

Answer 6

Na( sodium) , cl (chlorine ) H (ihydrogen) these are all emts in the periodic table?

Answer 7

yes

Answer 8

after bonding they are not called as elements

Answer 9

But individually they are ... Satisfy any option and lemme know ,.

Answer 10

do u agree that they are compounds?

Answer 11

So its D or what?

Answer 12

But how come pure? These could be elements but not pure here ?....

Answer 13

google definition of Pure substances; they are defined as substances that are made of only one type of atom or molecule

Answer 14

element: only one type of atom, doesn't matter how many

compound: two or more elelements bonded together, ionic or covalent and the elements within the compound are in a fixed ratio

molecule: the smallest unit of a element or compound that has the properties that element or compound

pure substance: a substance comprised of one type of element or molecule.

Answer 15

So is it A @mrdoldum ??

Answer 16

hey i said it is D

Answer 17

those are not elements