Test
Chemistry C2
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Preguntas del test (14)
1What are isotopes?
- ADifferent forms of the same element which have the same number of protons and a different number of neutrons.
- BDifferent forms of the same element which have the same number of protons and a same number of neutrons.
- CDifferent forms of the same element which have the different number of protons and a same number of neutrons.
2what is ionic bonding?
- Atransfer of electrons to form charged atoms
- BSharing electrons to form a full outer shell
- Atransfer of electrons to form charged atoms
3Ionic compounds have a regular lattice structure.
- AVerdadero
- BFalso
4Silver Chloride is soluble.
- AVerdadero
- BFalso
5Tick all correct flame tests.
- ASodium ions give an orange/yellow flame
- BSodium ions give an pink flame
- Cpotassium ions give a red flame
- Dpotassium give a lilac flame
- Ecalcium ions give a blue flame
- FCopper ions give a bluey-green flame
6Barium sulfate, used in x-rays is swallowed by patients in barium meals. It is toxic.
- AVerdadero
- BFalso
7How do you test for carbonates, for example Carbon dioxide?
- AAdd dilute HCL and barium chloride solution. A white precipitate means Carbon dioxide is there.
- BBubble it through limewater, if it's carbon dioxide it will go cloudy.
- Cflame test it! If it turns white its Carbon dioxide
8Simple molecular covalent substances have which of these characteristics?
- AVery strong covalent bonds form small molecules of two or more atoms.
- BVery weak inter-molecular forces.
- CHigh melting and boiling points.
- DConducts electricity.
9Giant Molecular Covalent Substances have which of these characteristics, tick all the correct answers.
- AThey're similar to ionic lattices.
- BThey're soluble in water.
- C(except for graphite). Don't conduct electricity.
- DDiamond and Graphite are main examples.
10which process is better for separating miscible ( mixable) mixtures, separating funnels or fractional distillation?
- ASeparating funnels.
- BFractional distillation.
11Alkali metals ( in group one of the periodic table) have which properties?
- Areact vigorously with water.
- BThe further you go down in the group, the more reactive they get.
- CReaction with water produces carbon dioxide
12When bonds break they form an endothermic reaction.
- AVerdadero
- BFalso
13Which four things can increase the rate of reaction?
- ASurface area
- Bconcentration
- Chow heavy the object is
- Da catalyst
- Etemperature
- Fcovering it with a hat
14select the correct answers.
- AThe relative atomic mass is the same as the elements mass number.
- BThe relative atomic mass is the same as the elements atomic number
- CRelative formula mass is all the relative atomic masses in that compound added together.
Información
- Descripción
- A simple quiz on GCSE edexcel C2.
- Autor
- greenchloe1998
- Idioma
- English
- Visitas
- 600
- Historial
- Creado el 13 ene 2015 · actualizado el 9 jun 2017
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