20 Questions
What is the smallest unit of matter called?
atom
What are the three subatomic particles that make up an atom?
protons, neutrons, and electrons
What is the electrical property of a particle called?
charge
What is the mass of a proton?
one atomic mass unit
What is the charge of an electron?
negative
What is the mass of an electron?
very, very small (9.10938356 x 10^-31 kilograms)
What is the percentage of an electron's mass compared to a proton's mass?
about 0.05%
What is the basic unit of matter?
atom
What are the two basic traits used to categorize subatomic particles?
charge and mass
What is matter?
a physical substance that takes up space and has mass
What is the mass and charge of a proton?
A proton has a mass of one atomic mass unit and a positive charge.
What is the mass and charge of a neutron?
A neutron has a mass of one atomic mass unit and a neutral charge.
What is the mass and charge of an electron?
An electron has a negligible mass and a negative charge.
What is the atomic number?
The atomic number is the number of protons in an atom's nucleus.
How does the atomic number determine an atom's identity?
The atomic number determines the atom's identity. For example, an atom with six protons in its nucleus is a carbon atom.
What is an element?
An element is a substance that is composed of a single type of atom.
How are elements organized in the periodic table?
Elements are organized into columns and rows in the periodic table.
What information is listed for each element in the periodic table?
Each element is listed with its full name, symbol, atomic number, and atomic mass.
What is matter?
Matter is any physical substance that takes up space and has mass.
What is an atom?
An atom is the basic unit of matter, made up of three smaller subatomic particles: protons, neutrons, and electrons.
Test your knowledge about atoms, subatomic particles, the nucleus, elements, and the periodic table in this informative quiz. Learn about the fundamental building blocks of matter and how they come together to form everything around us. Expand your understanding of atoms and their role in the physical world.
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