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Atoms, Periodic Table, Mixtures And Chemical Reactions Review > Atoms, Periodic Table, Mixtures And Chemical Reactions Review > Flashcards

Atoms, Periodic Table, Mixtures And Chemical Reactions Review Flashcards

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1
Q

What is chromatography used to seperate?

A

Solutions with a number of different solutes in a solvent.

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2
Q

What is a solute?

A

The solid

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3
Q

What is the solvent?

A

The liquid

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4
Q

What is the solution?

A

A liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).

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5
Q

What is the stationary phase in chromatography?

A

The solid or viscous liquid

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6
Q

What is the mobile phase in chromatography?

A

When substances are picked up and carried by liquid or gas.

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7
Q

What can we say if the Rf values of a reference and a spot match in all solvent?

A

It’s very likely that the mixture contains the reference compound

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8
Q

What is not a reason for repeating the solubility experiment?

A

To see if you can carry out an experiment in a quicker time.

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9
Q

Hydrochloric acid always makes something…

A

-chloride

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10
Q

What is a neutralisation reaction?

A

When an acid and alkali will neutralise each other and produce a salt and water. This is called a neutralisation reaction.

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11
Q

What microscope can see the outline of an atom

A

Electron microscope

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12
Q

Who were atoms discovered by?

A

John Dalton

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13
Q

What is an element?

A

Something made up of one type of atom.

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14
Q

What is a compound?

A

More than one type of atom chemically bonded together.

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15
Q

What is a mixture?

A

More than one type of atom not chemically bonded together.

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16
Q

What can a micture be a mixture of?

A

Elements and other elements, compounds and other compounds or elements and compounds

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17
Q

When are molecules formed?

A

Molecules are formed when two or more atoms join together chemically.

18
Q

What are covalent bonds?

A

Bonds between non-metals and non-metals. Covalent bonding is the sharing of electrons in the outer shell of the atom.

19
Q

What are two atoms covalently bonded together called?

A

Diatomic

20
Q

What do particles do around a fixed position?

A

Vibrate

21
Q

What do we call the tiny particles found in the universe?

A

Atoms

22
Q

What state are particles which are not touching and are always moving most likely to be in?

A

Gas

23
Q

What is the boiling point of water

A

100*C

24
Q

What is the element at the lowest boiling point?

A

Helium at -269*C

25
Q

What is the element with the highest boiling point?

A

Tungsten at 5,555*C

26
Q

What is the element with the lowest melting point?

A

Helium at -272*C

27
Q

What is the element with the highest melting point?

A

Carbon at 4500*C

28
Q

What are the physical properties of an element?

A

Colour, boiling point, melting point and density

29
Q

Who arranged elements into what we now know as the modern periodic table?

A

Dmitri Mendeleev

30
Q

At the moment how many elements are there in the periodic table?

A

118

31
Q

How many elements are natural?

A

90

32
Q

How are elements arranged?

A

In order of there atomic number.

33
Q

What are the vertical columns on the periodic table called?

A

Groups

34
Q

What are the horizontal rows of the periodic table called?

A

Periods

35
Q

What does the size of the atom do as you go left to right along the period?

A

Decrease

36
Q

What fraction of the elements are metals?

A

3/4

37
Q

What does the melting and boiling point of alkili metals do as you go down the group

A

Decrease

38
Q

What will a non-metal do if it reacts with oxygen?

A

Form a non-metal oxide.

39
Q

What will form when a metal reacts with oxgen

A

A metal oxide.

40
Q

What can metals be meaning that it makes a ring when hit?

A

Sonorous

41
Q

Metal is malleable, what does that mean?

A

It can be bent into shape

42
Q

What is a trend of halogens?

A

It gets darker and less reactive as you go down the group

Atoms, Periodic Table, Mixtures And Chemical Reactions Review (1 decks)

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