SCIENCE
CHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
1
|
|
2
|
|
3
|
|
0
|
Detailed explanation-1: -Element is a substance that cannot be broken down into simpler substances. Atoms are the smallest particle of an element. An element has a fixed composition because it contains only one type of atom.
Detailed explanation-2: -When a substance contains only one type of atom, it is called an element.
Detailed explanation-3: -Both elements and compounds have fixed composition and a definite set of properties.
Detailed explanation-4: -A chemical substance has a fixed composition. According to Proust’s inference, “All samples of a compound have the same composition; i.e., all samples have the same proportion, by mass, of the elements present in the compound”.
Detailed explanation-5: -A pure substance, or simply a substance, is a type of matter with a fixed composition. A substance can be an element or a compound. Some substances you might recognize are helium, aluminum, water, and salt. Matter that has the same composition and properties throughout is called a substance.