NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is an element?
A
Substance that consists of only ONE atom
B
Basic unit of matter
C
2 or more elements chemically combined
D
None of the above
Explanation: 

Detailed explanation-1: -An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance. Overview: In this activity, students practice using the periodic table to look up chemical symbols of elements and use paper circles to construct and compare models of elements and compounds.

Detailed explanation-2: -Two atoms with an identical number of protons in their nuclei belong to the same element. An element, like hydrogen, oxygen or iron, is a substance that cannot be broken down-outside of a nuclear reaction-into anything else.

Detailed explanation-3: -An element is defined as a pure substance made up of only one kind of atoms that cannot be converted into anything simpler than itself by any physical or chemical process. Examples: gold and silver. Mixtures, on the other hand, are impure substances.

There is 1 question to complete.