Matter and Chemical Change Flashcards

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1
Q

What material did people use for weapons and tools before metal?

A

Stone

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2
Q

After stone what did they use

A

Metal

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3
Q

What after metal

A

Bronze

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4
Q

What was after bronze

A

Iron

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5
Q

What did Democritis do

A

Used the word Atmos for the smallest particles that cannot be broken down anymore

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6
Q

What did Aristole do

A

Belived everything was made up of fire,water,earth,water

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7
Q

What is alchemy

A

Pseudo science that isnt real since its not based on facts, carried out by half scientists and half magician

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8
Q

Who is Al-Razi

A

Discovered the change of state to create plaster of paris

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9
Q

Who is Andreas Libau

A

Published Alchemia the first ever chemistry book high lighting the chemistry accomplishments

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10
Q

Who is Robert Boyl

A

Interested in the properties of gas and their behaviour under pressure

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11
Q

Who is ANTOINE LAURENT LAVOISIER

A

Known as father of modern chemistry and created a naming system to name different elements

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12
Q

Who is John Dalton

A

Made the first model of an atom and that each atom had a different weight and no two atoms weighed the same

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13
Q

Who is J.J. Thompson

A

He was the first person to discover a subatomic particle and called it an electron

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14
Q

Who is Hantaro Nagoka

A

Created a model that looks like a solar system

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15
Q

Who is Ernest Rutherford

A

Won nobel prize, Using thompsons model he conducted experiments to prove there is a small energetic core in the middle of an atom

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16
Q

Who is Niels Bohr

A

Furthered the model of an atom with noting electrons more in orbits ( electron shells ) and jump the orbits by losing or gaining energy

17
Q

Who is James Chadwick

A

Discovered the nucleus has protons and neutrons and the neutrons have the same mass as the proton but without the charge

18
Q

What are 4 indicators a chemical change has occurred

A

Colour change
Odour
Gas created
Change in temp

19
Q

Examples of
Atomic Name
Atomic Symbol
Atomic Number
Atomic Mass

A

Hydrogen
H
1.008
1

20
Q

What are the charges of Protons, Neutrons, and Electrons

A

Protons = positive
Neutrons = no charge
Electrons = negative charge

21
Q

What is a group, family, and period

A

Group is vertical columns
Period is horizontal rows
Family is different types of metal

22
Q

How to find number of neutrons in an atom

A

Subtract atomic number from atomic mass

23
Q

What unit do we use to measure the weight of an atom

A

Atomic Mass Unit

24
Q

What did berzelius and mendeleev do to the periodic table

A

Berzelius came up with chemical symbols and formulas

Mendeleev organized the elements by their properties

25
Q
A