What Is an Element? — Definition & Overview
Read this topicExplanations 4
- An element is the simplest form of matter that consists of atoms of the same type and cannot be broken down chemically. There are over 90 different types that occur in nature, a…
By Lydia Kim, Gabi Slizewska
- Before there were chemists, there were alchemists, who sought to make a living off turning cheaper metals into gold. While alchemy formed the foundations of modern chemistry and…
By Adrien, Alex Federspiel, Gabi Slizewska
- Elements cannot be broken down into simpler substances. Atoms that have the same number of protons are said to be the same type of element. They can vary in number of neutrons a…
By Jasper Brown, Alex Federspiel, Gabi Slizewska
- (Video) Difference Between Atoms and Elements by Wayne Breslyn In this video, Dr. B describes the difference between elements and atoms. He also talks about protons, neutrons, a…
By Mario Janakis
Problems 20
- Which of the following defines the element that an atom is?
- You are an alchemist who has given up on the idea of making gold, and are trying to make silver, Ag, instead. Which of the following chemicals could you make silver from?
- 2 atoms differ by a mass of 1 dalton. You find out that one of the atoms has 1 more neutron than the other. Are the atoms the same element?
- Which of the following is an element?
- Bronze can be created from copper, Cu. Which of the following must be true?
- Two atoms have the same amount of electrons. One has a +1 charge, and the other has a -1 charge. Are they the same element?
- Can two atoms of the same element have different masses?
- True or false: each element has distinct properties that can never change.
- True or false: the majority of chemical properties are defined by the amount of protons an atom has.
- A deuterium atom contains one proton, one neutron, and one electron. Is it its own element?
- Which of the following isn't an element?
- Elements can only become other elements through woah‾\underline{\phantom{woah}}woah.
- How many protons does an element have?
- If two atoms have different numbers of protons, but the same amount of neutrons and electrons, are they the same element?
- Which could be used to determine if two atoms are the same element?
- Which of the following is an element?
- A chemical reaction that changes an element's identity is called a woah‾\underline{\phantom{woah}}woah chemical reaction.
- How many electrons does a neutral atom of Yttrium, Y, have?
- If two atoms have the same charge but different amounts of electrons, can they be the same element?
- Oxygen has 8 protons. How many protons does the ion O−2O^{-2}O−2 have?