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11 Questions

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Basic Building Blocks of Matter

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Questions and Answers

What are the three subatomic particles that make up atoms?

Protons, electrons, and isotopes

Electrons, protons, and neutrons (correct)

Neutrons, electrons, and positrons

Nucleons, isotopes, and electrons

Which property defines each element?

Atomic weight and electron configuration

Color and physical state

Number of neutrons, protons, and electrons (correct)

Molecular structure and boiling point

How many known elements are there in the periodic table?

Less than 25

Exactly 50

More than 200

Over 100 (correct)

How are hydrogen and helium different from each other?

They have different numbers of neutrons, protons, and electrons Signup and view all the answers

According to the kinetic theory of matter, why does matter expand when it is hot?

Due to the constant movement of its particles Signup and view all the answers

Which of the following substances cannot be reduced to a simpler form by chemical means?

Gold Signup and view all the answers

What is the characteristic of an element that prevents it from being reduced to a simpler form by chemical means?

Atomic number Signup and view all the answers

Which of the following statements accurately describes the nature of elements?

Elements retain their chemical properties even when subjected to extreme conditions. Signup and view all the answers

What is a compound?

A chemical combination of two or more elements Signup and view all the answers

Which of the following is an example of a compound?

Water Signup and view all the answers

What distinguishes a compound from a mixture?

A compound is a chemical combination of elements, while a mixture is a physical blending of substances Signup and view all the answers