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?