Name:______________________________________
Date:___________________
Block:_________________
Chemistry Part 2 Study Guide
1.) What is the main difference between:
a. Elements and a compounds?
Elements contain one type of atom while compounds contain more than one type of atoms
b. Compounds and mixtures?
Compounds are bonded the same while mixtures is always a DIFFERENT combination of bonds
and/or elements.
c. Atoms and molecules?
Atoms make up molecules
5𝐻2 𝑂
2.) Label the parts of the compound.
Coefficient
Subscript
3.) Write the chemical formulas for the common compounds below.
a. Water _____𝐻2 𝑂__________________ b. Salt ________NaCl_________________
c.
Carbon Dioxide ____C𝑂2 _______________ d. Sugar ______𝐶12 𝐻22 𝑂11____________
4.) Determine the number of atoms for each compound.
a.
3NaOH
____9_____________
b. 𝐻2 𝑂2
_____4_____________
5.) Determine the total number of atoms in sugar (𝐶12 𝐻22 𝑂11) _________45____________________
6.) What is the difference between physical properties and chemical properties?
_Physical properties are observed with the five senses, while chemical properties exist at an atomic level.
7.) What is the difference between physical changes and chemical changes?
_Physical changes alter substances while chemical changes result in new substances formed.
8.) Label the following as a physical (P) or chemical (C) change.
a.
b.
c.
d.
Boiling Water _____P_________
Iron Rusting _______C_________
Burning Sugar ______C_________
Salt Dissolves in Water ___P_____
9.) What does a chemical equation represent? ____A chemical change_____________________________
10.) Label the following: A) Subscripts B) Coefficients C) Products D) Reactants
Reactants
Products
2𝐻2 + 𝑂2 → 2𝐻2 𝑂
(B) (A)
(A)
(B) (A)
11.) The Law of Conservation of Mass states that matter cannot be __created_______ or ____destroyed______.
Balance the following equations.
13.)
2
14.)
2
15.)
2
3
12.)
2
2
3
2
2