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Science > Yr 10 - Chemistry > Flashcards

Yr 10 - Chemistry Flashcards

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1
Q

Define chemical change

A

Cannot be easily reversed, chemical bonds are formed. EG rusting

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2
Q

Define physical change

A

Can easily be reversed, no chemical bonds formed. EG ice melts

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3
Q

Define atom

A

The smallest part of the element

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4
Q

Define periodic table

A

Table in which all know elements are arranged

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5
Q

Define malleable

A

Property of metal - can be shaped

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6
Q

Define density

A

the mass of a substance defined by its volume to determine how close the particles inside are measured in g/cm³

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7
Q

Define conductor

A

Property of metal can let heat and electricity through it

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8
Q

Define reactant

A

a substance that takes part in and undergoes change during a reaction

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9
Q

Define product

A

The substance that forms during a chemical reaction (appears on the right of the word or symbol equation)

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10
Q

Define valence shell

A

The outermost orbital of an atom

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11
Q

What are the properties of metal and explain them

A

(1) lustrous - shiny (2) electric/thermal conductor - alows tranfer without significant loss (3) high density - heavy for their size (4) high tensile strength - resistant to stretching (5) high melting and boiling points - NNNAAA (6) - ductile - made into wires (7) sonorous - ring noise when struct (8) malleable - shapeable

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12
Q

Example of metal, property and use

A

Copper is a good electrical conductor and is used in electrical circuits. Gold is malleable and can be molded into fine jewellery.

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13
Q

Explain how elements are organised in the periodic table

A

Groups go up and down and have the same number of electrons in their outermost shell. Periods go left to right and has the same number of electron shells. Elements in the same group or period react similar.

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14
Q

What is an isotope?

A

An atom with a different number of neutrons from it’s element.

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15
Q

What axis is the independent var?

A

x

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16
Q

What axis is the dependent var?

A

y

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17
Q

What line sperates the metals and non-metals

A

B, Si, Ge, As, Sb, Te, At are the metalloids

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18
Q

What is the atomic mass?

A

Protons + neutrons

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19
Q

What is the atomic number?

A

Protons (=) electrons

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20
Q

Why are atoms neutral overall?

A

Because protons equal the electrons in the atom unless an ion is formed

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21
Q

Define ion

A

An atom or molecule with an electric charge because of the loss or gain of electrons.

22
Q

What are the names of the groups in the periodic table?

A

1 = alkali metals 2 = alkali-earth metals 2.5 = transition metals 8/0 = noble gases 7 = halogens

23
Q

Which group are stable atoms?

A

Noble gasses (8/0)

24
Q

What is carbonate?

A

Carbon and oxygen

25
Q

What is H

A

Hydrogen

26
Q

What is He

A

Helium

27
Q

What is Li

A

Lithium

28
Q

What is Be

A

Beryllium

29
Q

What is B

A

Boron

30
Q

What is C

A

Carbon

31
Q

What is N

A

Nitrogen

32
Q

What is O

A

Oxygen

33
Q

What is F

A

Fluorine

34
Q

What is Ne

A

Neon

35
Q

What is Na

A

Sodium

36
Q

What is Mg

A

Magnesium

37
Q

What is Al

A

Aluminum

38
Q

What is Si

A

Silicon

39
Q

What is P

A

Phosphorus

40
Q

What is S

A

Sulfur

41
Q

What is Cl

A

Chlorine

42
Q

What is Ar

A

Argon

43
Q

What is K

A

Potassium

44
Q

What is Ca

A

Calcium

45
Q

What is Au

A

Gold

46
Q

What is Ag

A

Silver

47
Q

What is Cu

A

Copper

48
Q

What is Hg

A

Mercury

49
Q

What is Fe

A

Iron

50
Q

Why do atoms form ions

A

To become stable because some atoms have non-filled valence shells and to get a full shell it needs to donate or receive electrons.

Science (33 decks)

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