GCSE Chem P1
aluminium
Below is part of a reactivity series. What will be produced at the negative electrode if MOLTEN aluminium oxide is electrolysed?
cornstarch
Biodegradable plastic bags are now being made from polymers and what other substance?
limestone
Calcium Carbonate is also commenly known as...
negative
During electrolysis, reduction happens at the ... electrode. What is the missing word?
nobel gases
Name for group 0 elements
hydrogen
Name the gas released when group 1 elements react with water.
burette
Name this piece of equipment
hydrochloric acid
Sodium chloride is a soluble salt that can be made by mixing sodium hydroxide with which acid? Give the name, not the formula.
increase
Sodium hydroxide reacts with hydrochloric acid in a neutralisation reaction. Will the temperature of the solution increase or decrease during this reaction?
molten
Sodium metal can be obtained from sodium chloride by electrolysis if the sodium chloride is ... rather than in solution. What word completes this sentence?
metal hydroxide + hydrogen
group 1 metal + water ->
more
is carbon more or less reactive than iron?
strong
A liquid consists of simple molecules. Are the forces WITHIN the molecules strong or weak?
1
A mystery element contains 11 electrons. Which group of the periodic table will it belong to?
sodium hydroxide
A piece of sodium metal is added to a beaker of water. One of the products is hydrogen gas. Name the other product.
hydrogen gas
During electrolysis of sodium chloride solution, what is produced at the negative electrode?
vigorously
All the group 1 metals react ... with water
alkaline
Ammonia dissolves in water to give a solution. Will this solution be acidic or alkaline?
compound
Are two different elements that are chemically combined known as an element, a mixture or a compound?
positive
At which electrode does oxidation happen during electrolysis?
sand
Common name for silicon dioxide
covalent
Compounds formed from non-metals consist of ... bonds
low
Do the metals in group 1 of the periodic table have a high or a low density?
supplied
During a chemical reaction, is energy supplied or released when bonds are broken?
released
During a chemical reaction, is energy supplied or released when bonds are formed?
hydrogen
During electrolysis of a solution, a metal will only be produced at an electrode if it is below which element in the metal reactivity series?
300
How many atoms would a typical nanoparticle contain?
3
How many of the following types of compound can form giant structures: ionic, covalent, metal?
negative
Hydrogen ions are attracted to which electrode during electrolysis?
solid
If sodium is burned in chlorine gas a compound is formed. Will this compound be a solid, a liquid or a gas?
yes
If sodium is burned in chlorine gas a compound is formed. Will this compound dissolve in water?
molten
In what form must the ores be in order to use electrolysis?
liquid
In which of the three states of matter do the particles transfer significant amounts of energy by both conduction and convection?
oxygen
Iron is often found joined to ...
haematite
Iron oxide can be also called...
Lithium
Lithium, sodium and potassium are all in group 1 of the periodic table. Which of these three elements has the highest melting point? You can use the periodic table shown below to help you.
hydrogen
Magnesium sulfate can be made by reacting magnesium metal with an acid. A gas is also produced. Name this gas.
electrostatic
Oppositely charged ions in an ionic compound are held together by ... forces.
covalent
The atoms in a molecule are held together by a ... bond
white
The elements in group 1 of the periodic table react with non-metals to form compounds. What colour are all of these compounds?
reduction
The removal of oxygen from a substance is known as what?
reliability
The table below shows the results of a titration in which 25cm3 of alkali were titrated with hydrochloric acid. The titration was repeated four times in order to improve the ... of the result. What word completes this sentence?
false
True or false? All simple molecular substances are gases at room temperature.
false
True or false? In graphite every atom forms strong bonds with four others.
true
True or false? The outermost electrons in a metal atom are free to move throughout the whole structure of the metal.
true
True or false? The periodic table is so called because elements with similar properties occur at regular intervals (or periodically).
true
True or false? Universal indicator and phenolphthalein can both be used in titrations but phenolphthalein is preferred as it gives a more definite end point.
true
True or false? When arranged in order of atomic number, all the elements fit into appropriate groups.
mixture
Two elements are found together in a substance. They are not chemically combined. Is this substance an element, a mixture or a compound?
pink
What colour is phenolphthalein indicator in an alkaline solution?
carbon
What element is commonly used to reduce iron oxide?
electricity
What energy source does electrolysis use?
iron oxide
What is the name of the main compound found in iron ore?
neutralisation
What is the name of the process when an acid and an alkali react?
base
What name is given to substances (both soluble and insoluble) such as metal hydroxides and metal oxides that can neutralise acids?
electrolysis
What process is usually used to extract metals that are more reactive than carbon?
hydrorgen gas
What will be produced at the negative electrode if a solution of magnesium chloride is electrolysed?
water
When a carbonate reacts with an acid it produces carbon dioxide, a salt, and what other product?
water
When an acid reacts with a base a salt is produced along with another product. Name this product.
filtered
When making a soluble salt from an acid and an insoluble base, to remove the excess base after the reaction has finished, the solution must be... what?
insoluble
When making copper sulfate from copper oxide, the solid copper oxide must be added to the acid TO EXCESS (i.e. there is some unreacted copper oxide left in solution) because this base is... what?
lose
When metals react they ... electrons
negative
Which ions (positive or negative) will be oxidised during electrolysis?
electrolysis
Which of the following is NOT an example of an exothermic reaction: Combustion, electrolysis, or neutralisation?
endothermic
Which of the following is an example of an endothermic reaction?
calcium sulfate
Which salt is formed when CaCO3 reacts with sulfuric acid?
pure metal
Will layers of atoms slide past each other more easily in the pure metal or the alloy?
different
Would you expect the properties of a nanoparticle to be similar or different to the properties of the bulk material?