Yr 9 Periodic Table

What is the definition of an atomic number?

• The sum of the number of neutrons and protons in an atomic nucleus

• An integer that identifies an element uniquely; equal to the number of protons in an atom's nucleus

• A particle consisting of two or more atoms chemically combined

• A substance that cannot be broken down into simpler substances by chemical means

Which of the following is a charged particle formed by the loss or gain of electrons?

• Molecule

• Neutron

• Ion

• Proton

What is a covalent bond?

• A type of chemical bond that involves the electrostatic attraction between oppositely charged ions

• A type of chemical bond that involves the sharing of electron pairs between atoms

• A shorthand form of describing the ordered arrangement of a particle’s electrons into defined energy levels

• A measure of the combining power of a particle with other atoms when it forms chemical compounds or molecules

What is the role of reactants in a chemical reaction?

• They are the substances formed as the result of a chemical reaction

• They are substances that take part in and undergo a chemical change during a reaction

• They are a group of metals between Group II and III of the Periodic Table

• They are atoms with the same number of protons in the nucleus, but a different number of neutrons

What is the definition of a noble/inert gas?

• The elements found in Group I of the Periodic Table

• The elements found in Group II of the Periodic Table

• The gases in Group VIII of the Periodic Table that are not chemically reactive as they have a full outer shell of electrons

• A type of chemical bond that involves the sharing of electron pairs between atoms

What is the definition of an atomic number?

• The sum of the number of neutrons and protons in an atomic nucleus

• An integer that identifies an element uniquely; equal to the number of protons in an atom's nucleus

• A particle consisting of two or more atoms chemically combined

• A substance that cannot be broken down into simpler substances by chemical means

Which of the following is a charged particle formed by the loss or gain of electrons?

• Molecule

• Neutron

• Ion

• Proton

What is a covalent bond?

• A type of chemical bond that involves the sharing of electron pairs between atoms

• A type of chemical bond that involves the electrostatic attraction between oppositely charged ions

• A shorthand form of describing the ordered arrangement of a particle’s electrons into defined energy levels

• A measure of the combining power of a particle with other atoms when it forms chemical compounds or molecules

What is the role of reactants in a chemical reaction?

• They are the substances formed as the result of a chemical reaction

• They are substances that take part in and undergo a chemical change during a reaction

• They are a group of metals between Group II and III of the Periodic Table

• They are atoms with the same number of protons in the nucleus, but a different number of neutrons

What is the definition of a noble/inert gas?

• The elements found in Group I of the Periodic Table

• The elements found in Group II of the Periodic Table

• The gases in Group VIII of the Periodic Table that are not chemically reactive as they have a full outer shell of electrons

• A charged particle consisting of many atoms