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Chemistry Intro
Some notes for unit 1
25
Chemistry
10th Grade
09/21/2009

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Cards

Term
What is Chemistry?
Definition
The study of  matter and that changes it undergoes
Term
What are the 5 types of chemistry?
Definition

1. Organic

2. Inorganic

3. Physical

4. Analytical

5. Biochemistry

Term
What is a systematic approach used in scientific study?
Definition
Scientific Method
Term
What is the first step in the Scientific Method?
Definition
Observation
Term
What are the types of observations? What are the differences between each one?
Definition

1.Qualitative- 5 senses

2.Quantitative- measurements (anything with numbers)

Term
What is a hypothesis?
Definition
Tentative explanation for what has been observed
Term
T/F. An experiment is a set of controlled observations that test the hypothesis, one variable, a quantity or condition that can have more than one value at a time.
Definition
True
Term
What's the difference between independant/dependant variable?
Definition

1.Independant is the one that you change

2.dependant relies/reacts to the independant

Term
What is a constant?
Definition
factor that is not allowed to change during the experiment
Term
What is a standard for comparison (starting point)?
Definition
Control
Term
What is a conclusion?
Definition
a judgement based on the information obtained
Term
What is a theory?
Definition
an explanation that has been supported by MANY experiments
Term
What is the duration of all existence, past, present, and future?
Definition
Time
Term
What is the base unit in time?
Definition
Seconds
Term
What is the instrument used to measure time?
Definition
Clock
Term

What is the definition of length?

What is the base unit?

What is the instrument?

Definition

1.distance between two points

2.meters

3.meter stick

Term

What is the definition of mass?

The base unit?

Instrument?

Definition

1.amount of matter in an object

2.kilogram

3.balance

Term

What is the definition of weight?

What is the base unit?

What is the instrument?

Definition

1.amount of matter in an object and the effect of earth's gravitational pull on that matter

2.pounds

3.scale

Term

What is the definition of temperature?

What is the basic unit?

What is the instrument?

Definition

1.measure of how hot or cold an object is relative to other objects

2.Kelvin

3.thermometer

Term

What are the formulas for:

 

1.Celsius to Kelvin

2.Kelvin to Celsius

3.Celsius to Farenheit

4.Farenheit to Celsius

Definition

1.Celsius + 273

2. Kelvin - 273

3. (9/5)(Celsius) +32

4. 5/9(Farenheit -32)

Term

What is the definition of volume?

What is the base unit (solid)?

What is the base unit (liquid or irreg. solids)?

Definition

1.space occupied by an object

2.cubic centimeter

3.liter

Term

What is the definition of density?

What is the formula to find density?

What is the base unit?

Definition

1.ratio that compares the mass of an object to its volume

2.d=m/v

3.g/cm3

Term

What is the base unit for the amount of a substance?

1 mole=?

Definition

1.mole

2. 6.02 X 1023 particles of a substance

Term
What is accuracy?
Definition
how close a measured value is to an accepted value
Term
What is precision?
Definition
how close a series of measurements are to one another
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