What Is an Atom? — Definition & Overview
Read this topicExplanations 4
- Atoms are the basic building blocks of matter. Everything around us is made up of atoms, even if we don't see them. Particles in an Atom Atoms consist of three particles: proton…
By Catherine Yeo, Gabi Slizewska, Eric Sears
- Imagine you're ripping aluminum foil into smaller and smaller pieces. How small can you make the pieces until they are no longer aluminum? The smallest pieces of matter that mai…
By Adrien, Gabi Slizewska, Eric Sears, Trisha
- Atoms compose all materials that we deal with on a day-to-day basis. They are incredibly small, ranging in size from about 0.1 nanometers in diameter to 0.5 nanometers. To put t…
By Jasper Brown, Gabi Slizewska, Eric Sears
- (Video) What Is an Atom and How Do We Know? by Stated Clearly This video gives a great explanation of what atoms are, how they make up elements, and how we can see them.
By Mario Janakis
Problems 20
- Which of the following are not made out of atoms?
- If a neutral atom has 8 electrons, how many protons does it have?
- If a neutral atom has 8 protons, how many neutrons does it have?
- Which is not a component of an atom?
- Where in the atom are the electrons located?
- 2 atoms of carbon have different masses. These atoms are isotopes‾\underline{\phantom{isotopes}}isotopes of carbon.
- A molecule of water is diagrammed above. How many atoms are there in a molecule of water?
- This is a diagram of a hydrogen atom. How many neutrons does it have?
- Which components of an atom have a notable mass?
- Which components of an atom have charge?
- Protons and neutrons are composed of charged particles called quarks. The quarks that compose protons and neutrons either have positive or negative charge. If quarks have a char…
- What is located in the space between the nucleus and electrons of an atom?
- True or false: Each electron can move anywhere around the nucleus of an atom.
- What keeps electrons from flying away from atoms?
- If an ion has a charge of +1 and has 3 protons, how many electrons does it have?
- Which is not composed of atoms?
- Check all that apply. Neutrons have a woah‾\underline{\phantom{woah}}woah.
- Check all that apply. Protons have a woah‾\underline{\phantom{woah}}woah.
- Check all that apply. Electrons have a woah‾\underline{\phantom{woah}}woah.
- Carbon has 6 protons. How many electrons does a C+4C^{+4}C+4 ion have?