home *** CD-ROM | disk | FTP | other *** search
- @Which one of the following does not contain ionic bonds?
- NÛ
- NaCl
- AlÛClÜ
-
- @Iron and sulphur are:
- Both elements
- Both compounds
- Both mixtures
-
- @In a solid, if you supply more energy then:
- the more the particles vibrate
- the particles melt
- the bonds between the particles break straight away
-
- @Aluminium forms an ion AlÏä and oxygen an ion OÎ×. What is the formula of aluminium oxide?
- AlÛOÜ
- AlÜOÛ
- AlÛ
-
- @The different types of steel can contain mainly iron with different elements added. Which one of the following is NOT found in steel?
- Potassium
- Carbon
- Chromium
-
- @The type of bonding in metals is called:
- Metallic bonding
- Ionic bonding
- Hydrogen bonding
-
- @Which one of the following would be most suitable to prepare hydrogen gas from hydrochloric acid?
- Zinc
- Calcium
- Copper
-
- @In carbon dioxide, then main types of bond are:
- Covalent
- Ionic
- Van der Waals
-
- @Which of the following is incorrect for the halogens?
- They are all gases at room temperature
- They are all oxidising agents
- Usually form negative ions
-
- @Hydrogen gas enters at the left, and is burning on the right. What can be seen on the cold surface?
- #burn
- Water droplets
- Soot
- Yellowish deposit
-
- @Nitrogen from the air is needed to make ammonia. The nitrogen is obtained by:
- Fractional distillation of the air
- Bubbling the air through water
- Diffusion of the air
-
- @Oxides which are acidic and alkaine are called:
- Amphoteric
- Allotropes
- Isotopes
-
- @Sulphur burns in air to form:
- Sulphur dioxide
- Sulphur monoxide
- Sulphur trioxide
-
- @Which one of the following form a homologus series?
- CÛHß, CÜHá & CÝHÚã
- CÛHÝ, CÜHß & CÝHÚã
- CÛHß, CÜHß & CÝHß
-
- @Which of the following atoms is the largest?
- Rb
- K
- Li
-
- @The reaction between powdered magnesium and dilute sulphuric acid can be sped up by:
- Warming the mixture
- Adding water
- Using acid that is more dilute
-
- @CuO + HÛ ï Cu + HÛO Which of the following statements is correct?
- Copper oxide is an oxidising agent
- Hydrogen is an oxidising agent
- This is not a redox reaction
-
- @Which substance is used for pickling onions?
- Ethanoic acid
- Hydrochloric acid
- Ethane
-
- @Damage to the metal parts of buildings is caused by:
- Sulphur dioxide
- Carbon dioxide
- Lead emissions from cars
-
- @What volume of water is in the measuring cylinder?
- #cylin1
- 45.0 cmÏ
- 40.5 cmÏ
- 55.0 cmÏ
-
- @Pure water can be produced from salt water by distillation. To do this you would use a:
- Condenser
- Filter funnel
- Burette
-
- @Which one of the following is the molecular formula of a hydrocarbon which contains less than 80% by mass of carbon?
- CHÝ
- CÛHÝ
- CÜHá
-
- @Which of the following oxides will react with dilute hydrochloric acid AND dilute sodium hydroxide?
- Zinc oxide
- Copper oxide
- Carbon monoxide
-
- @The electrode labelled 'X' is connected to the positive terminal of a battery. The proper name for this electrode is:
- #electro1
- an anode
- a cathode
- an electrolyte
-
- @If heat energy taken in during a reaction the reaction is:
- Endothermic
- Exothermic
- Stable
-
- @An element that forms crystals composed of small molecules is:
- Iodine
- Diamond
- Magnesium
-
- @Which one of the following processes involves a chemical change?
- Oxidation
- Filtration
- Condensation
-
- @In a gas the particles are:
- Not attracted to each other at all
- Strongly attracted to each other
- Bonded to each other
-
- @An electrolyte will pass an electric current because it has many free moving:
- Ions
- Electrons
- Molecules