Question

station 2
elements and compounds
which of the following is not true about elements?
a. elements are made of atoms of the same type.
b. each element has a unique set of physical and chemical properties.
c. elements cannot be broken down into simpler substances.
d. elements are the building block of matter.
q1

Explanation:

Let's analyze each option:

• Option A: Elements are indeed made of atoms of the same type. For example, oxygen element is made of oxygen atoms.
• Option B: Each element has unique physical (like melting point) and chemical (like reactivity) properties. For instance, gold has different properties than iron.
• Option C: Elements cannot be broken down into simpler substances by ordinary chemical means. This is a fundamental property of elements.
• Option D: Atoms, not elements, are considered the building blocks of matter. Elements are made of atoms.

Answer:

D. Elements are the building block of matter.