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Chemisty 1 > Chapter 1 Flashcards > Flashcards

Chapter 1 Flashcards

0
Q

Lost the 7 steps to the scientific method

A 
Question- make a question
Research- do research on the question
Hypothesis- formal ute a hypothesis
Experiment- Do a control experiment 
Data- collect data 
Conclusion- draw a conclusion 
Communicate- share the data
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1
Q

Define scientific method

A

Steps to do a safe and good question answering method

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2
Q

Define control group

A

The group that is not being changed

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3
Q

Define independent variable

A

The variable that changes in the experiment

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4
Q

Define dependent variable

A

The variable the depends on the independent variable

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5
Q

Define constants

A

Variables in the experiment that stay the same

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6
Q

What are the 6 classifications of matter

A 
Element
Compound 
Solid 
Liquid 
Gases 
Plasma
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7
Q

Define chemical change

A

An process determined by the atomic and molecular composition and the structure of the substance involved

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8
Q

Define physical change

A

A change from one state to another without a change in chemical composition

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9
Q

Define chemistry

A

Branch of science that deals with the identification of substance of which matter is composed

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10
Q

Define reactants

A

A substance that takes part in and undergoes change during a reaction

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11
Q

Define product

A

A quantity obtained by multiplying quantities together

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12
Q

What are the physical characteristics of a solid

A

Liquid and gas

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13
Q

What are the physical characteristics of a liquid

A

Solid and gas

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14
Q

What are the physical characteristics of a gas

A

Liquid and solid

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15
Q

Defined matter

A

Physical substance in general

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16
Q

Define mass

A

The weight of something

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17
Q

Define volume

A

The amount of space in something

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18
Q

Define weight

A

The amount of mass in something

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19
Q

Define quantity

A

Things that can be described by numbers

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20
Q

What are the SI units

A

International system of units

21
Q

Why are SI units used

A

Because it is used all over the world

22
Q

Convert 0.00304 kL to mL

A

3.04

23
Q

Convert 3,452,000 pm to dm

A

345.200

24
Q

Which is a longer amount of time 3,670,000 ns or 4.080 ms

A

3,670,000 ns

25
Q

Which is longer 4,000,000 cm or 400.0 km

A

400 km

26
Q

What are the 2 types of pure substance

A

Element and compound

27
Q

Define compound

A

A mixture

28
Q

How does an element differ from compound

A

Element is only one compound is a mixture of 2 or more

29
Q

How are atoms and molecules related

A

Molecules are compound atoms

30
Q

What are the 2 differences between compound and a mixture

A

Compound are the ingredients and the mixture is the mix of 2 compound

31
Q

What is the equation for density

A

M/v= d

32
Q

What is the equation for mass

A

D*v = m

33
Q

What is the equation for volume

A

M/d= v

34
Q

Name the derived unit for each of the following: speed, area, and volume

A

Meter per second, square meter, and cubic meter

35
Q

What are the seven basic SI units

A 
Meter 
Kilogram 
Second 
Ampere 
Kelvin 
Candela 
Mole
36
Q

What are the seven basic SI units and what are they used for

A 
Meter- length 
Kilogram- mass 
Second- time 
Ampere- electric current  
Kelvin- temperature 
Candela- luminous intensity 
Mole- amount of substance
37
Q

What are 2 deprived units for density

A

Kilogram per cubic meter

Ampere per square meter

38
Q

If the mass of an object is 16g and the volume is 2cm 3 what would be the density be

A

2.67

39
Q

Define atom

A

The basic unit of a chemical element

40
Q

How many different types of atoms are there

A

110

41
Q

H2, N2, and O2 are all examples of what

A

Compound

42
Q

Define allotrope

A

Each of 2 or more different physical forms in which an element can exist

43
Q

Compounds can or cannot be broken down

A

Compounds can be broken down

44
Q

Define molecular and structural formulas

A

Molecular- giving the number of atoms of each of elements present in one molecule of a specific compound

Structural- a formula that shows the arrangement of atoms

45
Q

Define mixture

A

A substance made by mixing other substance together

46
Q

Define homogenous mixture

A

A mixture in which the constituents don’t appear separately

47
Q

Give three examples of a homogenous mixture

A

Blood
Glass of orange juice
Soapy water

48
Q

Define heterogeneous mixture

A

Constituents appear separately

49
Q

Give three examples of heterogeneous mixture

A

Oil in water
Sandy water
Orange juice with pulp

Chemisty 1 (3 decks)

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