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are the smallest particle of an element it is the building blocks which makes the substances

atoms

are the smallest particle of a compound

molecule

example atom

Na atom Ci atom Katom Catom N atom Ag atorn O atom Ca atom Al atom

example molecule

NaCI molecule AgCl molecules Water molecule HCI molecules Sugar molecule copper sulfate molecules

two types of compounds

electrovalent and covalent

are compounds that are formed by electrostatic force of attraction between the opposite cgarges species. They are generally formed between a metal and non mateal.

Electrovalent compounds or ionic compounds

nucleus contains subatomic particles called

protons and neutrons

unit of matter carrying negative charges of electricity

electron

unit of matter carrying positive charges

protons

-neutral units of matter of about the same mass as the proton

Neutrons

is made up primarily of protons and neutrons present in the nucleus, mass of an atom will be the integral or whole number equal to the sum of the protons and neutrons. The constituents of a nucleus, both protons and neutrons are often referred to as nucleons.

mass number

number of protons +number of neutrons

atomic number

number of protons = number of electrons

mass number

- number of protons

number of electrons

the horizontal rows are called

periods

Each Element there is given:

) the symbol 2) the atomic number in color in the upper left hand corner 3) the atomic weight below the symbol 4) the electron arrangement of the atom in main energy levels and energy sublevels

The positively charged electrode is the

anode

and the negatively. charged is called the

cathode

classification of elements

metals non metels metalloids

three state of matter

solid liquid gas

Charged particles can move between charged wire and plates called

electrode

Sodium (Na

natrium

Potassium (K

kalium

Iron (Fe

ferrum

Copper (Cu

cuprum

Silver (Ag

argentum

Tin (Sn

stannum

Antimony (Sb

stibium

Tungsten (W

wolfram

Gold (Au

aurum

Mercury (Hg

Hydrargyrum

Lead (Pb

plumbum

anaphy

anaphy

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anaphy 2

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cardio

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anatomy

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muscles

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endocrine system

muscles part 2

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muscles part 2

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cardiovascular

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respiratory system in anatomy lab

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respiratory alab part 2

6問 • 2年前

digestive system

digestive system

digestive system part 2

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urinary system

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digestive system

digestive system

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anatomy blood pressure

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reproductive system

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