Test
IGCSE Chemistry Mock Revision
Preguntas del test (20)
1Which of these compounds is covalently bonded?
- AIron oxide
- BMagnesium sulphate
- CCarbon dioxide
- DSodium chloride
2Which are properties of metals?
- AHigh melting and boiling points
- BOften gas at room temperature
- CBrittle; easy to break
- DHard and shiny
- EDense
- FSonorous
- GOften highly reactive
- HPoor conductors
- IGood conductors
- JMalleable and ductile
3Nitrate (NO3) has a valency of 1.
- AVerdadero
- BFalso
4When phenolphthalein comes into contact with an acid, it goes bright pink/purple.
- AVerdadero
- BFalso
5Which of the following increases rate of reaction?
- AIncreasing temperature
- BAdding a catalyst
- CDecreasing concentration
- DIncreasing surface area
- EAdding a barbiturate
6Reactivity increases as you go down the Group 1 metals.
- AVerdadero
- BFalso
7Which of these salts are insoluble?
- APotassium nitrate
- BBarium sulphate
- CSilver bromide
- DSodium carbonate
- ECalcium carbonate
8Find the chemical equation for:
Hydrogen peroxide -> water + oxygen- AH2O2 -> 2H2O + O2
- BH2O2 -> H2O + O
- C2H2O2 -> 2H2O + O2
- DH2O2 -> H2O + O2
9Why is a polystyrene cup used in the experiment to find a temperature change?
- ABecause it is safer.
- BBecause it is an insulator.
- CBecause it is cheaper.
- DBecause it is light.
10Which of these are halogens?
- AOxygen
- BPotassium
- CChlorine
- DFluorine
- EHelium
- FIodine
- GCopper
- HBromine
11Halogens exist as monatomic molecules.
- AVerdadero
- BFalso
12Which of the following compounds are ionically bonded?
- APotassium chloride
- BSulphur dioxide
- CCopper nitrate
- DMagnesium oxide
- EHydrogen bromide
13The ∆H for an exothermic reaction is a negative value.
- AVerdadero
- BFalso
14Which of these would you observe in the reaction between sodium and water?
- AShoots around surface of the water
- BHissing sound
- CBurns with a lilac flame
- DEffervescence/fizzing
- ENever disappears
- FMelts into a shiny ball
15The noble gases are unreactive because they are too large and have very weak electrostatic forces.
- AVerdadero
- BFalso
16What is the test for carbon dioxide?
- ABurns with a squeaky pop
- BTurns limewater milky
- CRelights a glowing splint
- DBleaches paper
17Which gas relights a glowing splint?
- ACarbon dioxide
- BAmmonia
- CHydrogen
- DOxygen
18In the reaction between potassium chloride and iodine, iodine displaces chloride to form potassium iodide.
- AVerdadero
- BFalso
19Which are properties of the halogens?
- AGood conductors
- BHighly reactive
- CAlkaline
- DPoisonous
- EBleaches
- FMetals
- GForm diatomic molecules
- HPainkillers
- IForm coloured gases
20Why does increasing temperature increase rate of reaction?
- AHigher quantity of particles, so there are more frequent collisions.
- BMore kinetic energy, so particles collide more often and more frequently.
- CLowers the activation energy required for reactions.
Información
- Descripción
- Test sobre IGCSE Chemistry Mock Revision, creado por julia.s.mulroone el 20/03/2015.
- Autor
- julia.s.mulroone
- Idioma
- English
- Visitas
- 279
- Historial
- Creado el 20 mar 2015 · actualizado el 6 abr 2018
- Etiquetas
- Valoración
- 3,8 de 5 · 4 valoraciones Valora este test