Show:
Periodic Table
Periodic Trends
Element Identification
Chemical equations and formulas
Physical and Chemical properties/changes and element, compund, mixture
100
What number tells you the number of protons and electrons?
Atomic Number
100

What is the 'brain' of the atom?

Nucleus

100
What is the name of element number 1?
Hydrogen
100

What does a subscript tell us?

The number of atoms of the element

100

What is an example of a chemical property?

new substance, color change, change in temperature, heat or light created, gas created

200
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
200
What particle has a positive charge?
Proton
200
What element has an atomic mass of 238.
U, Uranium
200

What does the coefficient in 3NaCl mean?

There are three molecules of NaCl
200

What is a physical property?

state of matter, size, shape, texture, color, luster

300
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
300

What are the characteristics of metalloinds and where are they found on the perioidic table?

They have characteristics of both metals and nonmetals and they are found along the stairsteps on the periodic table

300
What is the name of the element with the elemental symbol Zr?
Zirconium
300

What says that the number of atoms on the reactant side must equal the number of atoms on the product side?

 the Law of Conservation of Mass

300

Two substances react and create a precipitate.  Is this an example of a chemical reaction or a physical reaction?

chemical reaction

400
How many liquids are on the periodic table?
2
400

What metal on the perioidic table is liquid at room temperature?

mercury

400
Which element has 42 as its atomic number?
Mo, Molybdenum
400

How many atoms of Carbon are in reactant and the product of this equation?

CO2 + H2O → C6H12O6 + O2

Reactant- 1

Product- 6

400

What is a compound?

Two or more elements chemically combined

500
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
500

The periodic table is made up of mostly which type of elements?

Metals

500

Why are He, Ne, Ar, Kr, Xe, and Rn called noble gases?

Their outer electron shell is full and they do not bond easily with other elements. 

500

Balance this equation

Al + HCl → AlCl3 + H2

2Al + 6HCl = 2AlCl3 + 3H2

500
There are two types of mixtures.  What are they and how are they different?

Homogeneous and heterogeneous

Homogeneous is uniform throughout the mixture and in a heterogeneous mixture you can see each of the substances that make it.