Chemistry Flashcards by Jiyul Kim

_________ are the basic ingredients that make up matter -> it cannot be broken down into other substances

Elements

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A _______is used to find out the presence of some elements in a sample

Flame test

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A__________ is the characteristic wavelength of electromagnetic radiation that is emitted or absorbed by an object or substance, atom or molecule.

Spectrum

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Sodium Na flame test color

Yellow

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Lithium Li flame test color

Red

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Strontium Sr flame test color

Red

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Copper Cu flame test color

Blue-green turquoise

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Potassium K flame test color

Purple

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Calcium Ca flame test color

Orange

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__________ are the basic ingredients that make up matter and they cannot be broken down into other substances

Elements

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There are two ways to determine the type of element ; a _________ and a ___________

Flame test, spectrum

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An _______ is a small particle that is the building block of matter

Atom

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Atoms can be seen under a microscope (O,X)

X atoms are so small that they cannot even be seen under a microscope

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In 1803, the British scientist ___________ demonstrated his own atomic theory

John Dalton
“All matter is composed of atoms, which are no longer divisible”

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In the 20th century smaller components of the atoms were discovered.
1. ________ is located at the center of the atom and has a (positive/negative) charge
2. ________ is moving around the nucleus and has a (positive/negative) charge

Atomic nucleus, positive
Electron, negative

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Different type of atom -> different charge of the ________-> different number of the _______

Nucleus, electrons

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An _________ is a small particle that is the building block of matter

Atom

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Inside an atom, _________ is located at the center of the atom and has a (negative/positive) charge

Atomic nucleus, positive

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an __________ is moving around the nucleus and has (negative/positive) charge

Electron, negative

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A ________ is a group of atoms that are held together by a chemical bond and act as a unit

Molecule 분자

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Are there molecules that are made up of a single atom.

Yes, but most of them are made up of multiple atoms

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When individual atoms are held together to form molecules, the properties of matter emerge (O,X)

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_______ are the smallest particles that represent the properties of matter

Molecules

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Name the molecule and property of the molecules
Oxygen

O₂, 산소,
1) support the combustion (연소) of other other substances
2) necessary for respiration(호흡)

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Name the molecule and property of the molecules Water

H ₂ O, 물, 1) vital for biological process 2) common solvent for many substances

Name the molecule and property of the molecules Carbon monoxide

CO, 일산화탄소 1) produces from incomplete combustion 2) highly toxic

Name the molecule and property of the molecules Methane

CH ₄, 메테인 1) primary component(요소?) of natural gas 2) greenhouse gas contributing to global warming

Name the molecule and property of the molecules Helium

H, 헬륨 1) colorless, odorless, tasteless 2) present in trace amount (미량) 3) used in inflating balloons

Name the molecule and property of the molecules Hydrogen

H ₂, 수소 1) lightest 2) does not generate air pollutant during combustion 3) high energy output, potential future energys

Name the molecule and property of the molecules Nitrogen

N ₂, 질소 1) constitute about 78% of earth’s atmosphere 2) chemically inert (반응성이 낮은)

Name the molecule and property of the molecules Carbon dioxide

CO ₂, 이산화탄소 1) denser than air 2) sublimates (승화)from solid to gas at standard pressure

Name the molecule and property of the molecules Ammonia

NH ₃, 암모니아 1) gas with a strong odor 2) highly soluble in water 3) used in dyes and fertilizer 4) effective coolant to high latent heat (잠열) of vapor -> solid -> 다른 형태가 되는 것에 에너지 높음-> 냉각제로 사용

Name the molecule and property of the molecules hydrogen chloride

HCl, 염화수소 1) highly toxic gas 2) readily dissolves in water

A ________ is a groups of atoms that are held together by chemical bonds and act as a unit

Molecule

Molecules are the ________ particles that represent the properties of matter

Smallest

A ___________ is a letter of pair of letters used to represent a chemical element

Element symbol (=chemical symbol)

Write the English name for the following element symbols H He Li C N O F Na Mg Al S K Ca Fe Cu Sr Au Ag I Ba Pb Mn

H: hydrogen He: helium Li: lithium C: carbon N: nitrogen O: oxygen F: fluorine Na: sodium Mg: magnesium Al: aluminum S: sulfer K : postassium Ca: calcium Fe: Iron Cu: copper Sr: strontium Au: gold Ag: silver I: iodine Ba: barium Pb: lead Mn: manganese

A_________ is a formula giving the number of atoms of each of the elements present in one molecule of a specific compound

Molecular formula

Show the molecular formula of the given molecules Hydrogen Nitrogen Oxygen Ozone Carbon monoxide Carbon dioxide Methane Ammonia Water Hydrogen peroxide Hydrogen chloride

Hydrogen: H₂ Nitrogen: N₂ Oxygen: O₂ Ozone: O₃ Carbon monoxide: CO Carbon dioxide: CO ₂ Methane: CH₄ Ammonia: NH₃ Water: H₂ O Hydrogen peroxide: HO₃ Hydrogen chloride: HCl

A __________ is a letter or pair of letters used to represent a chemical element

Element symbol

A ___________ is a formula giving the number of atoms of each of the elements present in one molecule of a specific compound

Molecular formula

An ______is an atom or small group of atoms that has an electrical charge because it has added or lost one or more electrons

Ion

When an atom has added electrons, it becomes ________ It has a (positive/negative) charge

Anion Negative

When an atom has lost electrons, it becomes _________ It has a (positive/negative) charge

Cation Positive

Chemical formulas for anions and cations are called ________

Ionic formula

what is this in English and the formula 수소 이온

hydrogen ion H+

what is this in English and the formula 나트륨 이온

sodium ion Na+

what is this in English and the formula 칼륨 이온

potassium ion, K+

what is this in English and the formula 암모늄 이온

ammonium ion, NH ₄ +

what is this in English and the formula 마그네슘 이온

Magnesium ion, Mg2+

what is this in English and the formula 칼슘 이온

calcium ion, Ca2+

what is this in English and the formula 구리 이온

copper ion, Cu2+

what is this in English and the formula 철 이온

iron ion Fe2+

what is this in English and the formula 염화 이온

Chloride ion, Cl-

what is this in English and the formula 플루오린화 이온

Fluoride ion, F-

what is this in English and the formula 수산화 이온

hydroxide ion, OH-

what is this in English and the formula 질산 이온

Nitrate ion NO₃-

what is this in English and the formula 산화 이온

Oxide ion, O2-

what is this in English and the formula 황화 이온

Sulfide ion, S2-

what is this in English and the formula 황산 이온

sulfate ion SO₄ 2-

what is this in English and the formula 탄산 이온

carbonate ion, CO₃ 2-

An _______ is a small particle that is the building block of matter

Atom

A _______ is a groups of atoms that are held together by chemical bonds and act as a unit

Molecule

An _______ is an atom or small groups of atoms that has an electrical charge because it has added or lost one or more electrons

Ion

_________________ are substances created by the ionic bonding of cations and anions. It has a (positive/ neutral/negatice) charge

Ionic compound

what is this in English and the formula 나트륨 이온

Sodium ion, Na+

what is this in English and the formula 마그네슘 이온

magnesium ion Mg2+

what is this in English and the formula 칼륨 이온

Potassium ion K+

what is this in English and the formula 칼슘 이온

Calcium ion Ca2+

what is this in English and the formula 염화 이온

chloride ion, Cl-

what is this in English and the formula 산화 이온

Oxide ion, O2-

what is this in English and the formula 플루오린화 이온

Fluoride ion, F-

what is this in English and the formula 황화 이온

Sulfide ion, S2-

what is the following compound’ english name and formula 염화나트륨

Sodium ion(Na+)+ Chloride ion (Cl+) = sodium chloride (NaCl)

what is the following compound’ english name and formula 플루오린화 칼륨

Potassium ion (K+) + Fluoride ion (F-) = Potassium Fluoride (KF)

what is the following compound’ english name and formula 황화 마그네슘

Magnesium ion (Mg2+) + Sulfide ion (S2-) = magnesium sulfide (MgS)

what is the following compound’ english name and formula 산화 칼슘

calcium ion (Ca2+) + oxide ion (O2-) = Calcium oxide (CaO)

what is the following compound’ english name and formula 산화 칼슘

calcium ion (Ca2+) + oxide ion (O2-) = Calcium oxide (CaO)

what is the English name and the formula of this ion 구리 이온

copper ion, CU2+

what is the English name and the formula of this ion 암모늄 이온

Ammonium ion, NH₄ +

what is the English name and the formula of this ion 철 이온

Iron ion, Fe 2+

what is the English name and the formula of this ion 은 이온

silver ion, Ag+

what is the English name and the formula of this ion 수산화 이온

hydroxide ion, OH-

what is the English name and the formula of this ion 황산 이온

sulfate ion SO₄ 2-

what is the English name and the formula of this ion 진산 이온

Nitrate ion NO₃ -

what is the English name and the formula of this ion 탄산이온

Carbonate ion CO₃ 2-

what is the following compound’ english name and formula 수산화 구리

Copper ion (Cu2+) + hydroxide ion (OH-) = Copper hydroxide (Cu(OH)₂)

what is the following compound’ english name and formula 질산 철

Iron ion(Fe2+) + nitrate ion (NO₃2-) = iron carbonate (Fe(NO₃)2)

what is the following compound’ english name and formula 황산 암모늄

Ammonium ion (NH₄+) + Sulfate ion (SO₄2-) = ammonium sulfate ((NH₄)₂SO₄)

what is the following compound’ english name and formula 탄산 은

Silver ion (Ag+) + carbonate (CO₃2-) = silver carbonate ((Ag)₂CO₃)

_________ are substances created by the ionic bonding of cations and anions.

Ionic compound

Copper sulfate (___+___) Copper ion has ______ color

Cu2+, SO₄2-, blue

Potassium permanganate (_____+_____) Permanganate ion has _______ color

K+, MnO₄-, purple

앙금 영어로

Precipitate

Silver nitrate (______+______)

Ag+, NO₃-

Sodium Chloride (______+______)

Na+, Cl-

Sodium nitrate (_____+_____)

Na+, No₃-

Calcium chloride (_____+______)

Ca2+, Cl-

When certain cations and anions react in an aqueous solution, they create ________ that is insoluble in water

Precipitates

Silver ion (____)+Chloride ion(___)-> (_______) What color

Ag+, Cl-, AgCl, white

Lead ion (_____) + iodid (_____) = (_________) What color?

Pb2+, I-, PbI₂, yellow

Calcium ion(____) + Carbonate ion (____) = (______) What color

Ca2+, CO₃2-, CaCO₃, white

Calcium ion (____)+Carbonate ion (_____)=(____) What color

Ca2+, CO₃2-, CaCO₃, white

Barium (_____) + Sulfate (_____) = (______) What color

Ba2+, SO₄2-, BaSO₄, white

An ________ is a pure substance that cannot be broken down into any other substances by chemical or physical means

Element Ex) He, O₂

A________ is a pure substance made of two or more elements chemically combined in a set ratio.

Compound Ex) H₂O, CO₂

A ______ is made of two or more substances, such as elements, compounds, or both, that are together in the same place but not chemically combined

Mixture

In a mixture, each substance (Keep/Does not keep) this properties In a compound, each element (keep/does not keep) its properties.

Keep, Does not keep

In a mixture, the substances (are/are not) combined in a set ratio. In a compound each element (is/ is not) combined in a set ratio

Are not, is

In a ______________, the substances are so evenly mixed that you can’t see the different parts

Homogeneous mixture Ex) air, sugar water, salt water

In a ______________ the substances are not evenly mixed that you can see the different parts.

Heterogeneous mixture Ex) Rock, Soil, Juice

Pure substances including elements and compounds (have/ don’t have) a constant boiling point

Have

Mixtures, including homogeneous and heterogenous mixtures, (have/don’t have) a constant boiling point

Don’t have Why? Ex) 설탕물에 설탕 20g 들어있는 거랑 30g 들어 있는 것 다름

2-1 담임쌤 이름은

정현미 선생님 ^^

pure substances (have/don’t have) a constant freezing point

Have

Mixtures (have/don’t have) a constant freezing point

Don’t have

An _______ is a pure substance that cannot be broken down into any other substances

Element

A ________ is a pure substance made of two or more elements chemically combined in a set ratio

Compound

A ______ is made of two or more substances, such as elements, compounds, or both, that are together in the same place but not chemically combined

Mixture

The _______ of a substance is unique characteristics that distinguish it from other substances

Property Ex) melting point, freezing point (=melting point)

Nitrogen’s boiling point is -95.8 what is its application in industry

The liquid state of nitrogen can be used for cryopreservation (동결보관)

Butane boiling poring is -o.5 and isobutane is -11.7 what applications in industry can isobutane be used

Isobutane can be used as an outdoor fuel in winter

Tungsten melting point is 3422 what application in industry does it have

Tungsten can be used in the filaments of light bulbs

aluminum melting point is 660, and lead is 327.5 what application in industry lead have?

Lead has a lower melting point than other metals making it widely used in casting

State of nitrogen in room temperature State of water in room temperature State of lead in room temperature

Gas, liquid, solid

The mass of a substance per unit volume is called _______. [____,____] ______/______

Density, g/cm³, g/mL, mass, volume

Is the density the property of a substance?

Yes

Density of solids and liquids is significantly (smaller/larger) than that of gasses

Larger

Distant between particles: solid(__)liquid(__)gas Particles per equal volume: solid(__)liquid)(__)gas

<,<,>,>

The density of gas depends on its _____ and ______ The substances with relatively larger density ______ while the one with smaller density ______

Temperature, pressure Sink, float

Solute (한국어): 뜻 solvent (한국어): 뜻 dissolve (한국어): 뜻 Solution (한국어): 뜻

용질, 녹는것 용매 녹이는 것 용해 녹이다 용액 녹여서 만들어진 물질

the grams of solute per 100g of solvent is called _______ [____/____]

Solubility, g, 용매 100g

Is solubility one of the properties of a substance?

Yes

________: a solution with the maximum amount of solute in a given volume of solvent at a given temperature

Saturated solution

_________: a solution in which a smaller amount of solute is dissolved that in a saturated solution

Unsaturated solution

The higher the temperature, the lower/higher the solubility of the solid The solubility of a solute depends on the type of solvent

Higher

The higher the temperature, the lower/higher the solubility of the gas The higher the pressure the lower/higher the solubility of the gas

Lower, higher

Chemistry Flashcards

(137 cards)