Physical Change
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.
True or false. Is changing texture considered a physical change?
True
Define a Gas
A state of matter which will move around freely and expand in an open area.
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 at least one way to know if a chemical reaction has occurred?
If the substance has changed into a different substance, ect.
What physical change occurs when solid turns into gas?
Sublimation
A liquid's resistance to flow
What do the family's/ groups on the periodic table do?
Give you the number of ve- valence electrons in the element.
2 Characteristics of Chlorine (CL)
Yellowish,Transparent, Highly toxic, poisonous,coversive, reactive, gas.
True or false? Changing color is only a chemical change.
False.
True or False. Does physical change, change a substance?
Why does solid water molecules look different from amorphous solids?
Because water is a crystalline solid, so its molecules are in a pattern.
Name two families on the periodic table (not the number, the actual name)
Alkali metal, Alkaline Earth metals, Inner transition metals, Boron family, Carbon family, Nitrogen family, Oxygen family, Halogens, or Noble gases.
An Element is...
A pure substance made of only one kind of atom. An Element can not be broken down into a simpler substance.
Is changing state of matter a physical or chemical change?
It's both.
Name at least 5 ways physical change occurs.
Evaporation, melting, boiling, subliming, freezing, ect.
When heat is added to a liquid and becomes a gas is called what?
Evaporation
An electron has a mass of what? (Anyone who gets the closest or exact gets the point)
1/1836
what metals have 2+ ions? Name one of their Characteristics.
Alkali Earth metals (Reactive, Exothermic, Metals but dull, Soft/brittle, silver.)
Most of the mass of an atom is located here.
Nucleus