Atomic Structure
What is the center of an atom called?
What is the nucleus?
What are the vertical columns on the periodic table called?
What are groups or families?
What is the bond called when two atoms share electrons?
What is a covalent bond?
What is the term for anything that has mass and takes up space?
What is matter?
What are the substances on the left side of a chemical equation called?
What are reactants?
What particle has a positive charge?
What is a proton?
Elements in Group 18 are known as what?
What are noble gases?
What is the bond called when one atom steals an electron from another?
What is an ionic bond?
What is the energy of motion called?
What is kinetic energy?
What is the sign that a gas has been produced during a reaction?
What are bubbles?
What is the term for an atom that has gained or lost electrons?
What is an ion?
As you move from left to right across a period, what generally happens to the atomic number?
What is it increases by one?
The compound H₂O (water) is an example of what type of bond?
What is a polar covalent bond?
What is the law that states energy cannot be created or destroyed?
What is the Law of Conservation of Energy?
Balance this equation: _H₂ + _O₂ → _H₂O
What is 2 H₂ + 1 O₂ → 2 H₂O?
What is the total number of protons and neutrons in the nucleus of an atom called?
What is the mass number?
What are the elements that have properties of both metals and nonmetals called?
What are metalloids?
What is the name for the force that holds two water molecules together?
What is hydrogen bonding?
In a flashlight, chemical energy is transformed into what two main types of energy?
What is light energy and heat energy?
What is the term for a reaction that releases heat energy?
What is an exothermic reaction?
Describe the difference between the mass number and the atomic number.
What is the mass number is protons + neutrons, while the atomic number is just protons?
Which group on the periodic table contains the most reactive metals?
What are the alkali metals (Group 1)?
Sodium (Na) and Chlorine (Cl) form what type of compound and what type of bond?
What is an ionic compound formed by an ionic bond?
Describe the energy transformation that occurs in a hydroelectric dam.
What is potential energy of water → kinetic energy of moving water → mechanical energy of spinning turbine → electrical energy?
What are the four clues that a chemical reaction has occurred?
What are a color change, temperature change, gas formation (bubbles), or formation of a precipitate (solid)?