Atoms — Definition & Overview
Read this topicExplanations 5
- The Smallest Unit of an Element This is an atom, one of the particles that make up everything. Atoms are incredibly small, smaller than we can really comprehend. They are the sm…
By Deena Hauze, Alex Federspiel, Mario Janakis, Gabi Slizewska
- What Is an Atom? All matter is made up of teeny, tiny atoms (pronounced like "Adam's"). Atoms are way too small to see with the naked eye; they're even too small for most micros…
By Hannah Bonville, Alex Federspiel, Deena Hauze, Mario Janakis
- Properties of Atoms What Is an Atom? An atom is the smallest unit of matter that still keeps the chemical properties of an element. For example, a pound of gold has the same che…
By Sarah Morgan, Mario Janakis, Deena Hauze
- (Video) How Small Is an Atom? Spoiler: Very Small by Kurzgesagt – In a Nutshell This video helps us visualize just how tiny an atom really is. It describes the structure of an a…
By Gabi Slizewska, Mario Janakis
- Explanation #9048
By Gabi Slizewska, Mario Janakis
Problems 26
- Which subatomic particle is the smallest?
- Which elementary particle has no charge?
- What makes up the nucleus of an atom?
- Atomic number can be found by:
- Which of the following cannot be determined just by looking at an atomic number?
- Consider the element krypton (shown above). Which combination of its subatomic particles would result in a negative net charge?
- Which of the rows in the table above contains an error in the number of protons, neutrons, or electrons?
- Where are electrons located in an atom?
- Given the element symbol, what can you conclude about Selenium?
- Given the element symbols above, which of the following is true? Check all that apply.
- Which atomic particle is positively charged?
- Which atomic particle has a negative charge?
- What kind of atom is formed when there is an equal number of protons and electrons?
- What can be found by adding the number of protons and neutrons?
- What is the atomic weight or atomic mass?
- Which of the following is NOT true about valence electrons?
- The diagram above shows the electrons and the energy levels they are in for Krypton and Fluorine respectively. Which atom is more reactive?
- Using the periodic table above, determine how many valence electrons are present in oxygen.
- What is the overall charge of the nucleus of an atom?
- Which of the following is the smallest?
- Which of the following isn't made of atoms?
- What is incorrect about the diagram of a lithium atom above?
- In the hydrogen atom depicted above, the electron is pretty far away from the proton. In fact, real atoms have much larger distances between the nucleus and electron orbitals. W…
- Neutral atoms contain the same number of protons and woah‾\underline{\phantom{woah}}woah.
- If electricity is the flow of electrons, which direction does electricity flow in?
- Which is the smallest component of an atom?