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CHM 1
Unit 1 review topics
31
Chemistry
10th Grade
09/23/2012

Additional Chemistry Flashcards

 


 

Cards

Term
How is the Periodic Table of Elements (PTOE) arranged?
Definition

The PTOE shows all of the known elements arranged by increasing atomic number


Term
The smallest particle of an element:
Definition

is an individual atom


Term
Diatomic molecules and examples:
Definition

Elements tha exist as two atoms joined together

Examples: Br2, I2, N2, Cl2, H2, O2, F2

(All are gases except Br2 is a liquid)

 

Term
Matter
Definition
Anything that has mass and takes up space.
(includes air!)
Term
Pure substance
Definition
Has only one type of particle
Term
2 types of pure substances
Definition

1. Element: has only 1 type of atom (Silver (Ag); Oxygen O2

2. Compound has different types of atoms joined together (H20, NaCl)

Term
Temperature
Definition
measure of the average kinetic energy of the particles in a sample of matter
Term
Units of Temperature
Definition

° C or K

Celsius to Kelvin

Term
Formula to convert Celsius to Kelvin (°C to K)
Definition
K = °C + 273
Term
Volume
Definition
Amount of space occupied by a substance
Term
what units can volume be measured in?
Definition
L=liters, mL=milliliters, or cm3=cubic centimeters
Term
Density
Definition
Mass per unit of volume

D= mass/volume=g/mL
Term
Molar mass (MM)
Definition
Represents the mass of 1 mole of a substance
(for single elements the MM=the atomic mass)

Units=g/mol
Term
1 mole =
Definition
6.02 X 1023 particles/atoms (Avogadro's number)
Term
What is the density of an object with a mass of 2.34 and a volume of 7.3 mL?
Definition

D = m/v

    = 2.34 g / 7.3 mL

    = 2.34 ÷ 0.32 g/mL

    = 0.32g/mL

 

Term
What group contains the noble gases?
Definition
Group 18
Term
What group contains the Alkali Metals?
Definition
Group 1
Term
What Group contains Alkaline Earth Metals?
Definition
Group 2
Term
What group contains the Halogens?
Definition
Group 17
Term
List the 3 main classifications of elements
Definition
metals, non-metals, and metalloids
Term
What element is in group 13, period 3
Definition
Al
Term
What element is in group 2, period 4?
Definition
Ca
Term
Identify the group and the period for the element S (Sulfur)
Definition
Group 16, period 3
Term
What element has the atomic number 12?
Definition
Mg
Term
What is the molar mass for the element Cl?
Definition
35 g/mol
Term
What is the molar mass for H2O?
Definition

H:  2 x 1g/mol= 2g/mol

O:  1 x 16 g/mol = 16 g/mol

 

So the MM = 18 g/mol

Term
How many atoms are found in calcium phosphate Ca3(PO4)2 
Definition
13
Term
What is the molar mass of CH3CH2CH3
Definition

H:  8 x 1 = 8 g/mol

C:   3 x 12 = 26 g/mol

 

MM = 32 g/mol

Term
List how many of each atom in the compound Al(NO3)3
Definition

Al - 1

N - 3

O - 9

 

Term
Definition
[image]
Term
How can you identify the IV and the DV from a title?
Definition

The effect of the IV on the DV

 

Ex.  The effect of increasing temperature on the solubility of sugar 

IV; temperature (what you will change)

DV: solubility of sugar (measure how much dissolved)

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