Physical properties
Name one physical change.
Change in shape or color.
Define a solid and a liquid
A solid is an object that has a definite shape and volume, a liquid is something that does not have a definite shape or volume and flows freely.
What two elements make NaCl?
Chlorine and Sodium
What is the atomic number?
How many protons.
Define a Compound
A substance that is made up of two or more different atoms that are Chemically joined together.
What is it called when a gas turns into a liquid?
Condensation
What is the Octet rule?
Electrons that like to pair, Atoms loose, gain or share valence electrons to get to 8 valence electrons making it stable.
Name two Characteristics of Alka Metals
Very reactive, Explosive, lustrous, malleable, Ductile, Conductive metals, solids, form +1 ions.
What is a melting point and what states of matter are used?
A melting point is when a solid turns into a liquid when heat is around the solid.
2 Characteristics of Chlorine (CL)
Yellowish,Transparent, Highly toxic, poisonous,coversive, reactive, gas.
An Element is...
A pure substance made of only one kind of atom. An Element can not be broken down into a simpler substance.
what metals have 2+ ions? Name one of their Characteristics.
Alkali Earth metals (Reactive, Exothermic, Metals but dull, Soft/brittle, silver.)