Junior Cert Science - Chemistry

A substance that cannot be broken down into simpler substances by chemical means is also known as
1. an element.
2. a molecule.
3. a nucleus.
4. a mixture
Which famous Russian scientist is credited with arranging the elements in the Periodic table?
1. Anna Kournikova.
2. Vladimir Putin.
3. Dimitri Mendeleev.
4. Leonid Tolstoy.
What is meant by a group in the Periodic Table?
1. A horizontal row of elements.
2. A vertical row of elements.
3. The family of metals in the Periodic Table.
4. The family of non-metals in the Periodic Table.
How many main groups are there in the Periodic Table?
1. Eighteen.
2. Two.
3. Four.
4. Eight.
Which one of the following is the correct symbol for carbon?
1. Cl
2. C
3. Na
4. Ca
The elements highlighted in the periodic table are known as
1. metals.
2. non-metals.
3. halogens.
4. liquid elements.
Which of the following elements are in the same group?
1. Lithium, calcium and sulfur.
2. Helium, neon and argon.
3. Lithium, boron and fluorine.
4. Hydrogen, fluorine and chlorine.
What are horizontal rows in the Periodic Table called?
1. Periods.
2. Groups.
3. Alkali metals.
4. Metals.
Which of the following elements is a metal?
1. Sodium.
2. Carbon.
3. Phosphorous.
4. Neon.
Which one of the elements shown is a non-metal?
1. Be
2. Na
3. Al
4. S
Which one of the following metals is a liquid at room temperature?
1. Mercury.
2. Aluminium.
3. Sodium.
4. Calcium.
Which one of the following metals floats on water?
1. Mercury.
2. Magnesium.
3. Copper.
4. Sodium.
Which of the following are both properties of metals?
1. They are good conductors of heat and electricity.
2. They have low melting points and conduct electricity.
3. They have a shiny lustre and are good heat insulators.
4. They have high melting points and low boiling points.
Which group of elements have the following properties? Good conductors of electricity, shiny in colour, highly reactive with water and are stored under oil.
1. Alkaline earth metals.
2. Halogens.
3. Noble gases.
4. Alkali metals.
The elements in group I are not usually found free in nature because
1. they are rare earth metals.
2. they are very reactive.
3. they are all man made.
4. they are very unreactive.
The elements in group I have similar chemical properties because
1. they all react with water.
2. they are all metals.
3. they all look similar.
4. they all have a single electron in their outer shell.
Which one of the following reactions occurs when potassium is added to water?
1. Nothing happens because potassium does not react with water.
2. The potassium catches fire and gives off hydrogen gas.
3. The potassium sinks to the bottom of the container with a loud bang.
4. The potassium reacts slowly with the water to produce oxygen gas.
From the list below, which element has properties similar to potassium?
1. Helium.
2. Calcium.
3. Sodium.
4. Hydrogen.
Which of the following alkali metals is the most reactive?
1. Lithium.
2. Sodium.
3. Potassium.
4. Rubidium.
What colour flame is produced when potassium, or a potassium salt is burned in a bunsen flame?
1. Yellow
2. Lilac
3. Green
4. Red
What is an element?
1. A negatively charged particle orbitting around the nucleus.
2. The smallest particle that can exist independently.
3. A substance which cannot be split up into simpler substances by chemical means.
4. A substance made up of two or more atoms chemically combined.
The chemical properties of an element are mainly influenced by
1. the number of protons in its nucleus.
2. the number of neutrons in the nucleus.
3. the size of the nucleus.
4. the number of electrons surrounding the nucleus.
The elements in the Periodic Table are arranged in order of
1. atomic number.
2. mass number.
3. volume.
4. density.
In the Periodic Table of the elements, what information is given by the number above each chemical symbol?
1. The atomic number of the element.
2. The mass number of the element.
3. Its group number.
4. Its period.
Name the elements which have the symbols: Na and Fe
1. Nitrogen and iron.
2. Sodium and iron.
3. Sodium and fluorine.
4. Neon and phosphorous.
Of the elements shown in the Periodic Table, which is the most reactive?
1. K
2. Li
3. Ne
4. P
What is the common name given to the elements in group I?
1. Alkaline earth metals.
2. Halogens.
3. Alkali metals.
4. Non-metals.
To which group in the periodic table does the unreactive element argon belong?
1. Group I.
2. Group II (2).
3. Group VII (7).
4. Group 0.
Which of the following elements are both alkaline earth metals?
1. Sodium and potassium.
2. Magnesium and beryllium.
3. Sodium and calcium.
4. Copper and gold.
Which of the following is typically a property of non-metals?
1. They are poor conductors of electricity.
2. They have a shiny lustre.
3. They are good conductors of heat.
4. They are less dense than water.
From the following list, select the non-metal(s): copper, chlorine, zinc, sodium, carbon.
1. Copper, zinc and sodium
2. Chlorine and carbon
3. Chlorine
4. Chlorine, sodium and carbon
Which one of the following is a common use for gold?
1. Soft drinks cans.
2. Killing bacteria.
3. Jewellery.
4. Welding torches.
Which one of the following elements is used in computer chips?
1. silver
2. chlorine
3. silicon
4. neon
The group VII (7) elements are known as
1. the halogens
2. the alkali metals
3. the transition metals
4. the noble gases
What is the trend for group VII (7) elements as they go down the group?
1. They increase in order of reactivity.
2. There is no change in their reactivity going down the group.
3. They become trendier as they go down the group.
4. They decrease in order of reactivity.
Why are the elements fluorine, chlorine and iodine placed in the same group of the Periodic Table?
1. They have the same number of electrons in their outer shell.
2. They are all metals.
3. They all readily react with oxygen.
4. They have the same density.
Which halogen is used in household bleach?
1. Fluorine.
2. Chlorine.
3. Bromine.
4. Iodine.
Name the element that forms a yellowish gas and is used in toothpaste to prevent tooth decay.
1. chlorine
2. fluorine
3. bromine
4. iodine
Why are the elements in group O unreactive?
1. They each have a stable nucleus.
2. They have a full outer shell of electrons.
3. They have an even number of electrons in their outer shell.
4. They are all gases.
Which of the following gases is used in advertising lights?
1. Helium.
2. Neon.
3. Argon.
4. Oxygen.
Which of the following is an element?
1. Steel
2. Aluminium
3. Brass
4. Water
The order in which elements are arranged in a period of the Periodic Table depends upon
1. their densities.
2. their increasing atomic numbers.
3. their increasing number of neutrons.
4. their increasing mass numbers.
Name the family of elements highlighted in the Periodic Table below?
1. Metals.
2. Alkali metals.
3. Alkaline earth metals.
4. Halogens.
In the chemical symbol shown, what does the letter Z represent?
1. The mass number of the element.
2. The number of neutrons in the atom's nucleus.
3. The atomic number of the element.
4. Its density.
Match the elements chlorine and helium with their correct symbols
1. Cl and He respectively.
2. C and He respectively.
3. Cl and H respectively.
4. Ca and Hg respectively.
Which gases in the following list exist as separate atoms: hydrogen, helium, nitrogen, oxygen, neon.
1. Hydrogen and helium.
2. Helium and nitrogen.
3. Helium and neon.
4. Oxygen and nitrogen.
Name the group of elements which have the following properties: i) They float on water. ii) They readily react with oxygen. iii) They burn in a bunsen flame with a characteristic colour.
1. The alkali metals.
2. The alkaline earth metals.
3. The halogens.
4. The noble gases.
Potassium is a metal which floats on water. What is the principal reason for not using it in the manufacture of ships?
1. It is highly reactive with water.
2. It is a soft metal.
3. It is very expensive.
4. It is a very rare metal.
What do the elements of group II (2) have in common?
1. Same mass number.
2. Same atomic number.
3. Nothing in common.
4. Similar chemical properties.
Of the elements listed below, which is most likely to have the following properties: Silver-coloured, good conductor of electricity and low-density metal
1. Carbon.
2. Magnesium.
3. Fluorine.
4. Oxygen.
What element in group III (3) is a non-metal?
1. Boron.
2. Aluminium.
3. Gallium.
4. Scandium.
Which one of the following elements is used in electric wiring?
1. Copper.
2. Chlorine.
3. Neon.
4. Sodium.
From the list below, can you select the non-metal that exists as a liquid at room temperature?
1. Mercury.
2. Nitrogen.
3. Bromine.
4. Argon.
Which of the following statements is/are correct about the group VII (7) elements? i) They are known as the halogens. ii) They all have the same melting point. iii) They have similar chemical properties.
1. Statement i) only.
2. Statements i) and ii).
3. Statements ii) and iii).
4. Statements i) and iii).
Which of the following are both added to drinking water?
1. Fluorine and chlorine.
2. Chlorine and bromine.
3. Oxygen and magnesium.
4. Calcium and fluorine.
Only one of the following sets of elements all belong to the halogens. Which one is it?
1. Neon, helium and argon.
2. Beryllium, carbon and oxygen.
3. Fluorine, carbon and bromine.
4. Chlorine, bromine and fluorine.
Which one of the following halogens is found in the solid state at room temperature?
1. Fluorine.
2. Chlorine.
3. Bromine.
4. Iodine.
Which of the following group of elements generally do not react?
1. The halogens.
2. The noble gases.
3. The alkali metals.
4. The transition metals.
Which of the following statements is/are true about the noble gases in group O? i) They are very reactive elements. ii) They have full outer shells of electrons. iii) They have similar chemical properties.
1. Statement i) only.
2. Statements i) and ii).
3. Statements ii) and iii).
4. Statement ii) only.
Why would light bulbs be filled with argon rather than air?
1. Argon being inert, will not react with the filament.
2. Argon will cause the bulb to glow more brightly.
3. Argon costs less to produce than air.
4. Argon is more widely available than air.

Junior Cert Science - Chemistry - Periodic Table

Multiple Choice Quiz