In electron shells/clouds/rings on the outside of the nucleus.
100
How are elements arrange in the periodic table?
The elements are arrange in order of atomic number or number of protons.
100
What is the difference between a chemical and a physical change?
A physical change can be reversed and a chemical change cannot be reversed easily.
100
How many total atoms?
C3H7NO2
13
100
Name the element
20 Protons
What is Calcium?
200
What are the three subatomic particle (small particles) that make up an atom?
Protons and Neutrons make up the nucleus of the atom and the electrons are found outside the nucleus.
200
What is the difference between a group and a period?
Groups form vertical columns and periods are horizontal rows.
200
What are three signs of a chemical change?
Color change,
Formation of a gas,
Temperature change, and
Formation of a precipitate
200
How many chlorine atoms?
SeOCl2
2
200
Name the element
79 Protons
What is Gold?
300
Draw the Atomic Structure of Boron
To be checked by teacher
300
What is the most reactive group of nonmetals?
Group 17 - The Halogens
300
What are two physical properties of a non-metal?
Insulators,
Brittle,
Dull
300
When you have a elements inside ( ) with a subscript, what do you do to count the atoms?
Multiply the subscript outside the ( ) by the atoms and subscripts inside
300
Name the element
Group 14
Period 5
What is Tin (Sn)?
400
What subatomic particle do we use to identify an atom?
Protons
400
Why are the Noble Gases considered stable?
Each element in the Noble gases has a full outer electron shell.
400
What are three physical properties of a metal?
Conductivity,
Malleability,
Magnetism, and
Luster
400
The coefficient in front of a compound tells us..
The number of molecules of the compound
400
Name the element
Group 2
Period 4
What is Calcium (Ca)?
500
Draw the Atomic Structure for F.
Check with teacher
500
What is the most reactive group of metals?
Group 1
500
Do physical changes produce compounds or mixtures?
Mixture
500
If a chemical equations follows the law of conservation of mass, it means...
The number of atoms in the reactants and the number of atoms in the products are the equal.
The mass of the reactants and the mass of the products are equal.