Palos Verdes Intermediate School

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Science 7

Instructor
Ms Sue Song
Department
Science

Course Description

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ATOMS #2

Mass: a measurement of how much matter an object contains.
Compound: a pure substance formed from chemical combinations of two or more different elements.
Chemical Change: a change in which one ore more substances combine or decompose to form new substance.
Physical Change: changes that only alters the form of the substance, but not its identity.
**Know how to do simple balancing equation.  Keep in mind that the left side(reactant(s)) of the elements should always equal the right side( product(s)).
Everything is Matter.
Coefficient: is the number in front of the formula.  It tells how many molecules of a given formulas are present. It indicates how many molecules or atoms of each reactant and product are involved in a reaction.
Subscript: smaller number to right-lower of the element.  It reflect each elements atomic contribution to a given molecule. It tells the # of atoms in a molecule or ratio of  element in a compound.
Products: a substance formed as a result of a chemical reaction.
Reactants: a substance that enters into a chemical reaction.
Chemical Equation: a short, easy way to show chemical reaction, using symbols instead of words.
Chemical Formula: a combination of symbols that represent the elements in a compound.
Answers to the Balancing Equation Sheet: 
1) 4 Na + O--> 2Na2O
2) 2H+ O--> 2H2O
3) Na2SO+ CaCl--> CaSO+ 2NaCl
4) 2Al2O--> 4Al + 3O2
5) N+ 3H-->2NH
6) 3Fe + 4H2O --> Fe3O+ 4H
7) P4 + 5O2 --> P4O10
8) 2C2H+ 7O --> 4CO + 6H2O
9) SiCl --> Si + 2Cl2
10) C + 2H--> CH
 Don't forget about how to count the Atoms from your 2 practice sheets on counting the atoms.

Atoms

3 States of Matter:
 
solid: particles are vibrating without moving.  
           it has a definite shape and volume.
 
liquid: particles are moving among each other.
           it has a definite volume but no definite shape.
 
gas: particles are free moving.
        it does not have a definite shape nor definite volume.
 
The subatomic particles of an Atom:
 
proton: it has a positive charge (+)
              it's also known as the atomic #
              it's also the same number for the electron
              it's located inside the nucleus
              the atomic mass unit is 1
 
neutron: it has no charge
                it's located inside the nucleus with the proton
                the atomic mass unit is 1
 
electron: it has a negative charge (-)
                it's also the same number for the proton
                it's located outside the nucleus in the energy level
                the atomic mass unit is 1/1837 or about 1/2000
 
Mass # = # proton + # neutron
 
Isotope: atoms of the same element that have different mass numbers.
 
Columns of the Periodic Table are aka (also known as) Families or Groups:  There are 18 of them.
 
Rows of the Periodic Table are aka Periods:  There are 7 of them. 

Weekly Homework Agenda for 2/5-2/9/2018

Monday: Do Chapter 17 End of Chapter Review Questions #1-15 in complete sentences.
Tuesday: Do Chapter 17 Standard Assessment on pg 57 in the composition book.
Wednesday: Do Workbook pages 256-259.
Thursday: Study for Chapter 17-1/2 Quiz

Weekly Agenda for 1/29 to 2/2, 2018

Monday: Do Chapter 16 Workbook Summary Reviews pages 244-249.
Tuesday: Study for Chapter 16 Test.
Wednesday: Read Chapter 17-1 and do Workbook 17-1, pages 250-252.
Thursday: Read Chapter 17-2 and do Workbook 17-2, pages 253-256. Study for Chapter 17-1/2 Quiz.

Weekly Homework Agenda for 1/22-1/24/2018

Monday: Do Chapter 16 End of Chapter Review Questions #1-15 in complete sentences.
Tuesday: Do Chapter 16 Standard Assessment on page 51 of the composition book and in the correct format. Study for Chapter 16-3/Blood Quiz.
Wednesday: Finish the System Project!!!
Thursday: Finish the System Project!!

Weekly Homework Agenda for 1/16-1/19/2018

Monday: No School
Tuesday: Read Ch 16-1, take notes, and do workbook pages 235-238.
Wednesday: Read Ch 16-2, take notes, and do workbook pages 239-241.
Thursday: Read Ch 16-3 and do workbook pages 242-243.  Study for Chapter 16-1/2 Quiz.

Weekly Homework Agenda for 1/8-1/12/2018

Monday: Read Chapter 15-3, take notes, and do workbook pages 226-228.
Tuesday: Family Nite
Wednesday: Do Chapter 15 Standard Assessment in compositions book in full sentences. Study for Chapter 15-3 Quiz. Be prepared for Chapter 15 REVIEW GAME!!! 
Thursday: Do Workbook Chapter Summary pages 229-234. Study for Chapter 15 Test.

Weekly Homework Agenda for 1/2-1/5/2018

Monday: NO SCHOOL!!!
Tuesday: Read Chapter 15-1 and take notes. Don't forget the cans.
Wednesday: Read Chapter 15-2 and take notes.  Don't forget cans for the Can Crushing Lab tomorrow.
Thursday: Study for Chapter 15-1/2 Quiz.