Science - Chemistry in your life
Terms
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- Define conductors of heat.
- Any object that conducts heat is called conductor of heat.
- Define term malleable.
- A metal that can be hammered into thin sheets it is called malleable.eg.Gold,Aluminium
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Give one word for:-
A metal that can be hammered into thin sheets - Malleable
- Define term - Ductile
- Metal that can be drawn into fine wires.eg.Tungsten
- Metal that can be drawn into fine wires
- Ductile
- What is Tungsten used for?
- To make thin filaments in electric bulbls.
- Metal used to make thin filaments in electric bulbs
- Tungsten (W)
- Symbol of tungsten
- W
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Which gas is present in -
the bright yellow lamps used for street lighting. - Sodium vapour
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Which gas is present in -
the bluish lamps used for street lighting. - Mercury vapour
- Use of Sodium vapour
- used in the bright yellow lamps used for street lighting.
- Use of Mercury vapour
- Used in the bluish lamps used for street lighting.
- Use of O2 in daily life
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Helps seriously sick patients in hospitals
Helps climbers on high mountains and deep sea divers to breathe comfortably - Symbol and Use of Aluminium
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Al
To make aluminium foil, cans for soft drinks - A non-metal which is used to vulcanize rubber
- Sulphur (S)
- A non-metal which is used to make torch cells
- Carbon (C)
- A gaseous element used to amke lights in signboards
- Neon (Ne)
- A metal which is used to make fire-workds
- Magnesium (Mg)
- A non-metal whcose compound is used to make non-stick cooking pans as well as modern computer
- Silicon (Si)
- Compound used in photographic films
- Silver Chloride (AgCl)
- Complex molecule with formula
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Glucose C6H12O6
CAne Sugar C12H22O11 -
Write balanced equation and state the type of reaction
Calcium Carbonate ---> Calcium Oxide + Carbon Dioxide -
CaCO3 --> CaO + CO2
Decomposition Reaction -
Write balanced equation and state the type of reaction
Iron + Sulphur --> IronSulphide -
Fe + S --> FeS
Combination Reaction -
Write balanced equation and state the type of reaction
Mercuric Oxide --> Mercury + Oxygen -
2HgO --> 2Hg + O2
Decomposition Reaction -
Write balanced equation and state the type of reaction
Lead Oxide + Nitric Acid --> Lead Nitrate + Water -
PbO + 2HNO3 ---> Pb(NO3)2 + H2O
Neutralisation Reaction -
Write balanced equation and state the type of reaction
Phosphorous + Chlorine ---> Phosphorous Trichloride -
P + 3Cl ---> PCl3
Combination Reaction -
Write balanced equation and state the type of reaction
Zinc + Nitric Acid ---> Zinc Nitrate + Hydrogen -
Zn + HNO3 --> Zn(NO3)2 + H2
Displacement Reaction -
Write balanced equation and state the type of reaction
Sodium Hydroxide + Sulphuric Acid --> Sodium Sulphate + Water -
2NaOH + H2SO4 ---> Na2SO4 + 2H2O
Neutralization Reaction -
Write balanced equation and state the type of reaction
Carbon Monoxide + Oygen ---> Carbon Dioxide -
2CO + O2 --> 2CO2
Combination Reaction -
Write balanced equation and state the type of reaction
Magnesium + Hydrochloric Acid ---> Magnesium Chloride + Hydrogen -
Mg + 2HCl ---> MgCl2 + H2
Displacement Reaction -
Write balanced equation and state the type of reaction
Hydrogen + Oxygen ---> Water -
2H2 + O2 ---> 2H2O
Combination Reaction -
Write balanced equation and state the type of reaction
Zinc Oxide + Hydrochloric Acid ---> Zinc Chloride + Water -
ZnO + 2HCl ---> ZnCl2 + H2O
Neutralisation Reaction - Alloy of this metal are used to make aeroplanes
- Aluminium
- Poisionous chemical used to kill plant pests
- copper Sulphate
- Soft form of carbon
- Graphite
- Process that turns natural rubber into elastic rubber to be made into tyres
- vulcanisation
- chemical added to water to purify it
- chlorine
- Copper, a good conductor of electricity, is used to make this
- Electrical wires
- Substance used to reduce friction in machinery
- Lubricant
- Marble and egg shells are made of this compound.
- calcium carbonate
- Alloy of copper and zinc
- brass
- Metal used in atomic reaction
- uranium
- Alloy made of steel and chromium
- Stainless Steel
- Compounds of this metal are used to make computer parts
- Silicon
- Compounds containing Carbon and Hydrogen only
- Hydrocarbons
- Mixture of 2 or more metals
- Alloy
- Salt used as a fertiliser
- Potassium Nitrate
- Common Name for Calcium Carbonate
- Plaster of Paris
- Name the compound CH4
- Methane
- Compounds containing C, H, O and N.
- Proteins
- Chemical formula of this simple sugar is C6H12O6
- Glucose
- An oxide used in paints
- Zinc Oxide
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Give one example of each acids:
Monobasic
Dibasic
Tribasic -
HCl
H2SO4
H3PO4 - Name the natural indicator which becomes brick red in alkalie
- Haldi
- Give example of one exothermic reaction
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When quicklime is mixed in water it produces heat and forms Slaked Lime .
CaO + H2O = Ca(OH)2 -
Which of the following oxides give rise to an Alkali:
Oxides of Carbon
Zinc Oxide
Sulphur Dioxide
None of these -
Which of the following are salts:
Calcium Carbonate
Sodium Chloride
Potassium Nitrate
All - All
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Which of the following reactions do not form a salt?
1. Copper Oxide and Hydrochloric Acid
2. Sodium + Water
3. Copper Oxide + Hydrochloric Acid
4. Zinc + dilute Sulphuric acid - 2.Sodium + Water
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Ca(OH)Cl is a
1. base
2. acid
3. acid salt
4. basic salt - 4.
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_____ + Sodium hydroxide ---> Sodium Phosphate + Water
Complete the equation and balance it. - H3PO4 + 3NaOH ---> Na3PO4 + 3H2O
- Give example of one acid salt with formula
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Sodium Hydrogen Sulphate
NaHSO4