H Bio, Ch1 Habin Cha

Front 1

Atom

Back 1

Basic unit of matter that consists of a dense central nucleus surrounded by electrons

Hint 1

1) Hydrogen atom

2) We can't see hydrogen atoms with our eyes.

Front 2

Molecule

Back 2

Electrically neutral group bonded by chemical bonds

Hint 2

1) Water

2) Water is a molecule which is H2O

Front 3

Element

Back 3

Substances that cannot be separated into simpler substances

Hint 3

1) Ion Neon

2) We can see elements in periodic table.

Front 4

Proton

Back 4

Positively charged elementary particle

Hint 4

1) uud

2) There are 8 protons in oxygen.

Front 5

Electron

Back 5

A stable particle in all atoms

Hint 5

1) Negative charge

2) Carbon have 8 electrons.

Front 6

Neutron

Back 6

Elementary having no charge

Hint 6

1) Neutral charge

2) Carbon have 6 neutrons.

Front 7

Ion

Back 7

Electrically charged atom or group of atoms losing or gaining electrons

Hint 7

1) H+ OH-

2) Ion can have either have negative and positive charge.

Front 8

Isotope

Back 8

A chemical element the same protons in the nucleus

Hint 8

1) Carbon

2) Carbon have 3 kinds of isotope. Carbon skeleton.

Front 9

Ionic bond

Back 9

Two ions formed by moving one or more electrons

Hint 9

1) NaCl

2) NaCl is bonded by ionic bond.

Front 10

Covalent bond

Back 10

The bond formed by sharing electrons

Hint 10

1) HCl

2) Covalent bond shares their electron shell.

Front 11

Polar covalent bond

Back 11

A type of bond which electrons are shared unequally

Hint 11

1) CO3

2) There are polar covalent bond and covalent bond.

Front 12

Law of conversation of matter

Back 12

The law of matter cannot be created or destroyed

Hint 12

1) Chemical formula

2) When we dissolve something , law of conservation of matter involves in chemical formula.

Front 13

Activation energy

Back 13

The least amount of energy required to move atoms or molecules

Hint 13

1) Chemical formula

2) We can see activation energy from chemical formula and chemical reactions.

Front 14

Hydrogen bond

Back 14

A type of chemical bond when hydrogen has a covalent bond

Hint 14

1) Ethanol

2) Ethanol is bonded by hydrogen bond.

Front 15

PH scale

Back 15

A scale that shows substances PH

Hint 15

1) PH scale paper

2) We can see if something is acid from PH scale.

Front 16

Acid

Back 16

A substance with a sour taste

Hint 16

1) Lemon

2) Lemon is acid and its lower than 7 in PH scale.

Front 17

Base

Back 17

The principal element (base)

Hint 17

1) Subatomic particles.

2) When we dissolve a substance the base is the result.

Front 18

Organic compounds

Back 18

A compound containing hydrocarbon group

Hint 18

1) Glucose

2) Organic compounds are made with hydrocarbon.

Front 19

Macromolecules

Back 19

A very large molecule

Hint 19

1) Plastics

2) macromolecule is made if small molecules.

Front 20

Carbohydrates

Back 20

Organic compounds including hydrogen and oxygen

Hint 20

1) Bread Milk

2) We need to eat carbohydrates to have energy.

Front 21

Lipids

Back 21

A organic compounds insoluble in water and soluble in alcohol

Hint 21

1) Cells of animal

2) Lipids are soluble in water and it protect animal genes.

Front 22

Proteins

Back 22

The plant or animal tissue with a lot of molecules

Hint 22

1) Beans Grains Nuts

2) Beans contain a lot of proteins.

Front 23

Nucleic Acids

Back 23

Complex compounds with high molecular weight

Hint 23

1) DNA, RNA

2) Nucleic Acids contain genetic informations.

Front 24

Monosaccharides

Back 24

A simple sugar

Hint 24

1) Disaccharide, polysaccharide

2) monosaccharide contains C H O.

Front 25

Fatty acids, glycerol

Back 25

Consist of a long hydrocarbon chain

Hint 25

1) Perfumes, Cosmetics

2) Fatty acids and glycerol consist a long hydrocarbon chain.

Front 26

Amino acids

Back 26

An organic compounds that contains at least one amino group

Hint 26

1) Valine, Lysine

2) There's 22 kinds of amino acids.

Front 27

Nucleotides

Back 27

Any group of molecules that build block of DNA or RNA

Hint 27

1) DNA, RNA

2) There is DNA and RNA in nucleotides.

Front 28

Disaccharide

Back 28

Group of carbohydrates

Hint 28

1) Milk sugar

2). Disaccharide is a group of carbohydrates.

Front 29

Polysaccharide

Back 29

A carbohydrate containing more than three monosaccharide

Hint 29

1) Starch, Glycogen

2) Polysaccharide have more than three monosaccharide.

Front 30

Polypeptide

Back 30

Chain of amino acids linked together

Hint 30

1) Hemoglobin

2) Hemoglobin have 1 polypeptide.

Front 31

Peptide Bond

Back 31

A covalent bond formed by joining the carboxyl group

Hint 31

1) Dipeptide

2) Peptide bond is formed by carboxyl group.

Front 32

DNA

Back 32

Genetic information

Hint 32

1) A T G C

2) DNA contains genetic information that decide our appearance.

Front 33

Gene

Back 33

The basic physical unit of heredity

Hint 33

1) Heredity

2) Gene decide our heredity.