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Science project . By:Sultan AL Thani . Introduction . We are going to investigate human ingenuity and the connection between the reactivity of metals and when they were discovered and the connection between them . Magnesium. Symbol:Mg Atomic number:12

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science project

Science project

By:Sultan AL Thani


We are going to investigate human ingenuity and the connection between the reactivity of metals and when they were discovered and the connection between them



Atomic number:12

Atomic mass:24.305 Atomic molecules per unit

Melting point:650.0 °C (923.15 K, 1202.0 °F)

Boil point:1107.0 °C (1380.15 K, 2024.6 °F)

Number of protons/electrons:12

Number of neutrons 12

Atomic structure

Number of Energy Levels: 3First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 2.

Magnesium was discovered in the year 1808, the scientist that discovered this metal was Humphrey Davy. The name magnesium originated form a city called magnesia.



Atomic number:20

Atomic mass:40.078 amu

Melting point:8390 C

Boiling point: 1484 C

Number of Protons/electrons:20

Number of neutrons:20

Atomic structure:Number of Energy Levels: 4First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 8 Fourth Energy Level: 2. The date Calcium was discovered is 1808. The person that discovered calcium Humphrey Davy. People can use calcium for life forms for bones and shells.


Name: Potassium

Symbol: K

Atomic Number: 19

Atomic Mass: 39.0983 amu

Melting Point: 63.65 c

Boiling Point: 774.0 c

Number of Protons/Electrons: 20

Number of Neutrons: 20

Classification: Alkali Metal – group 1 of the periodic table and are reactive metals due to 1 electron in their outer shell. The alkali metals are malleable, ductile and are good

conductors of heat and electricity.

the early scientists
The early scientists
  • The early chemists had no idea of Atomic structure or of protons or electrons there was no such thing as a proton number.
how did they find a relationship in the early days
How did they find a relationship in the early days.
  • The early chemists tried to find patterns in the elements.
  • They had two ways.
  • These were to look at their physical and chemical properties.
  • Or their relative mass.
the relationship between the elements the early days
The relationship between the elements the early days.
  • The elements and the hierachy of the elements for the reactivity series was determined by doing experiments to see how strongly metal reacts.
  • The three standard reactions used by the early 19th century chemists were to see how the elements reacted with
  • Air
  • Water
  • Dilute acid
newlands octaves
Newlands Octaves
  • A scientist in 1863 called Newlands noticed that every eighth element had similar properties. These were called Newlands Octaves.
  • The pattern broke down on the third row with transition metals such as Fe and Cu and Zn not fitting in.
  • Latter in the 20th century scientists realized why, the arrangement of electrons and protons made elements behave differently.
the 20 th century
  • It was not until the 20th century after protons and electrons were discovered that it was realized the elements should be arranged in order of proton number.
  • And that elements react due to the number of electrons that are in its out shields.
the power of electrons
  • Potassium and Calcium are linked together because they are in group 1 and have the same number of electrons in their outermost electron shells which is one electron.
  • Magnesium although in group 2 shares a common relationship between Potassium and Calcium is that it is reactive because it has only two electrons but one outer shell and is fairly reactive like the other two.

I learned from this project that all metals are linked together in some way by the periodic table. I found out that they are connected by the time that they were discovered and by the same scientist.