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sc.ienc.e > Scientific Investigations > Flashcards

Scientific Investigations Flashcards

1
Q

What is Science?

A

comes from latin word scientia/body of knowledge

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2
Q

What is the 3 main branches of science

A

Physical, Earth, Life Science

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3
Q

study of matter/ energy

A

Physical Science

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4
Q

explain planet earth, space

A

Earth Science

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5
Q

focuses on organisms/ life processes and their environment

A

Life Science

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6
Q

John Dalton

A

Atomic Theory

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7
Q

entire plant can be regenerated from single mass of tissue using technology

A

Tissue Culture Technology

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8
Q

ionizing radiation technology (using gamma rays/ reduce eliminates microorganisms

A

Food irradiation

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9
Q

discovered ashes

A

Georg Ernst Stahl

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10
Q

Father of Modern chemistry/oxygen

A

Antoine-Laurent Lavoiser

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11
Q

Set of explanations/organized principles to explain certain phenomenon/ not absolute fact

A

Theory

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12
Q

Systematic and logical approach to solve problems/understand diff phenomena

A

Scientific method

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13
Q

Process of establishing facts, involves observation senses

A

Identifying the Problem

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14
Q

formed to address question, tentative answer, / educated guess

A

Formulation of Hypothesis

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15
Q

can be changed, dependent cannot be changed

A

independent variable/manipulated independent

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16
Q

accuracy, acceptability

A

data gathering

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17
Q

observable qualities add descriptions /use senses
Ex: describe color

A

Qualitative data

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18
Q

numbers obtained using various measuring devices
Ex: thermometer

A

Quantitative data

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19
Q

include relevant data

A

organizing and analyzing data

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20
Q

summarize, report what you have obtained

A

drawing conclusion

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21
Q

Scientific method in order

A
  1. Identifying the Problem
  2. Formulating hypothesis
  3. Data gathering
  4. organizing and analyzing data
  5. Drawing conclusion
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22
Q

can use measurements in daily living

A

Scientific Measurements

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23
Q

more then just a number, accurate measurement contains appropriate unit that gives meaning to a number

A

Measurement

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24
Q

all matter is composed of extremely small particles called?

A

Atoms

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25
Q

given element are identical in size, mass/ differ in size mass, cannot be subdivided, created, destroyed

A

atoms

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26
Q

revised metric system/proposed by General Conference of weights and measures in 1960

A

International system of units/ SI

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27
Q

necessary in conducting investigations/ basis of assessing results in experiment

A

Accurate measurement

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28
Q

miles, yards, pounds, gallons, cups, pints, tablespoons, / may be inaccurate

A

english system

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29
Q

how long something is/distance from one point to another/ SI unit is the meter
ex: kilometer-long. centimeter-short

A

length

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30
Q

amount of space occupied by an object/ cubic meter, centimeter, liter, milliliter

A

volume

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31
Q

amount of matter in an object

A

mass

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32
Q

measure of force exerted by gravity on object

A

weight

33
Q

mass of an object per unit volume

A

density

34
Q

hotness/ coldness, thermometer/ kelvin

A

temperature

35
Q

special faculty containing necessary chemicals, tools, equipment/ design depend on field of specialization/purpose

A

Science lab

36
Q

performed in science lab

A

scientific investigations/explorations

37
Q

words, symbols p, pictograms, placed in items/places where safety precautions must be applied/considered, general safety procedure

A

Laboratory safety symbols

38
Q

developed the globally harmonized system for classification, labeling of hazards chemicals

A

UN/ United nations

39
Q

Anything with mass, volume , occupies space

A

Matter

40
Q

has constant composition ex: water diamond

A

Pure substance

41
Q

composition varies by sample, classified as heterogeneous or homogeneous

A

mixtures

42
Q

2 parts of pure substance

A

elements, compounds

43
Q

substances made up of one type of atom -tin, diamond

A

elements

44
Q

substances made up of one more than one type of atom
ex: sugar, water

A

compounds

45
Q

2 parts of mixtures

A

heterogeneous, homogeneous

46
Q

not uniform ex; fruit salad

A

heterogeneous

47
Q

uniform ex; water/ juice

A

homogeneous

48
Q

Parts of homogeneous

A

colloid, suspension

49
Q

gluelike, mixture with scatted particles, throughout dispersing medium
ex: milk, blood, ice cream

A

Colloid

50
Q

Suspended in liquids
ex; mud, strawberry jam

A

suspension

51
Q

done to separate mixture containing substances mostly of diff sizes

A

Sieving

52
Q

effective technique if one of component have magnetic

A

using a magnet

53
Q

separate certain solid components by centrifugal force

A

Centrifugation

54
Q

partitioning between mobile, stationary phase

A

chromatography

55
Q

allowing insoluble substance to settle/ allows you pour out liquid

A

decantation

56
Q

separating components of homogeneous liquid mixtures with diff boining points ex: distilled water

A

distillation

57
Q

turning into gas, leaving out dissolved solid particles
ex; boiling pork

A

evaporation

58
Q

remove solid particles from various filtering agents
ex: filtering paper

A

filtration

59
Q

building block of matter

A

elements

60
Q

tabular arrangement of elements based on its atomic number, mass, recurring chemical properties

A

periodic table

61
Q

how many pcs of info does each element have?

A

4

62
Q

what are the 4 pcs of info in each element?

A
  1. atomic number
  2. Element symbol
  3. Element name
  4. element mass
63
Q

international scientific organization in 1919, responsible for further study/organize diff elements elements to approve

A

The International Union of Pure and applied chemistry (IUPAC)

64
Q

have tensile strength/ ability to resist breaking when pulled, ductile, can be drawn to fine wires Ex; brass, aluminum, steel, copper

A

Metals

65
Q

insulators, don’t conduct heat, electricity; diamond, oxygen, carbon, silicon

A

Non-Metals

66
Q

classified as semi conductors/ conductors electricity under conditions such as doping process ex: Boron (B), Arsenic (A), Antimony (Sb), Silicone (Si)

A

Metalloids

67
Q

elements around you are needed by organisms for each growth/developed

A

essential elements

68
Q

small percentage/amounts , lower concentration
Ex; Iron(Fe), Manganese(Mn), Copper(Cu), Zinc(Zn), Boron (B), Chloride (Cl)

A

Micro

69
Q

large amount/percantage
ex; nitrogen, phosphorus, oxygen

A

Macro

70
Q

any chemical substance that has sour taste
ex; lemons, curd, vinegar, orange taste

A

Acid

71
Q

bitter, (alkaline) , soapy to touch/ found in diff substances
ex; bleach, ammonia, washing powder, soap

A

base

72
Q

neither acidic nor basic in nature/ plain
ex: pure water, table salt, sugar solution

A

neutral substance

73
Q

substance can determine if another substance is acidic/ basic/ indicate presence of an acid/base in substance by changing its color
Ex: litmus (paper/solution), turmeric, china rose, phenolphthalein indicator

A

indicators

74
Q

Sodium hydroxide name of base-found in?

A

soaps

75
Q

magnesium hydroxide found in?

A

milk of magnesia

76
Q

calcium hydroxide found in?

A

lime water

77
Q

ammonium hydroxide found in ?

A

window cleaners

78
Q

density formula?

A

m/v | mass over volume

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