Science 8, Re-Test, Chapter 1 Flashcards
What is Atomic Number?
-the amount of protons in an atoms nucleus
What is a valence electron?
-an electron that is found in the outermost energy level of an atom and that determines the atom’s chemical properties
What is an Ionic Bond?
-a bond that forms when electrons are transferred from one atom to another, which results in a positive ion and a negative ion
What is an Ion?
-a chared particle
What is a Covalent Bond?
-a bond formed when atoms share one or more pairs of elctron
What is a Valence Electron?
-an electron that is on the outermost energy level of an atom
What is a Crystal Lattice?
-the regular pattern in which a a crystal is arranged
What is an Electron-Dot Diagram/Lewis-Dot Diagram?
-a diagram displaying the amount of valence electrons around the chemical symbol
The more easily an atom gains electrons, the more _________ it loses
-energy
Why can metal bend and not break?
-the metallic bonds can bond and not break because the atoms are rapidly moving around
Why doesn’t Neon or other noble gases bond easily?
-this is because it is a stable gas with a full or almost filll outer energy level
What is the smallest possible thing a substance can be separated into?
-a molecule
What is Ductility?
-the property of metal that allows it to be formed into wire
What is Malleability?
-the property of metal that allows it to be bent into different shapes without it being broken
