Chemistry Unit 1-2: Atoms, Elements and Compounds S3B
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/4
Earn XP
Description and Tags
Chemistry Unit 1 S3B 2026
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai | Chat |
|---|
No analytics yet
Send a link to your students to track their progress
5 Terms
TB DEFINITION: An atom is the smallest unit of matter that contains protons, neutrons and electrons.
→ The smallest particles, that we cannot break down further in chemical reactions, are called atoms.
What is an atom?
TB DEFINITION: A substance containing only one type of atom; it cannot be broken.
What is an element?
TB DEFINITION: A substance in which two or more elements are chemically combined.
What is an compound?
TB DEFINITION: A mixture contains two or more substances that are not chemically combined.
What is a mixture?
In many substances, the particles consist of two or more atoms joined together. These particles are called molecules.
What is a molecule?