Topic 1 atomic structure and the Periodic Table

Topic 1 atomic structure and the periodic table MCQ

Substance B contains two types of atoms that are chemically combined together in fixed proportions. Which type of substance is B

Metallic element

Mixture

Non-metallic element

Compound

What is the name for atoms of the same element that have different numbers of neutrons

Ions

Compounds

Molecules

Isotopes

Which subatomic particle was discovered, leading to the change from the initial model of the atom as tiny, indivisible spheres

Neutron

Proton

Electron

Alpha particle

Which scientist first suggested that electrons orbit the nucleus at specific distances

James Chadwick

Dmitri Mendeleev

Niels Bohr

The scientist who developed the plum pudding model

What is the effect on reactivity as you move down Group 7 (the halogens)?

Reactivity increases because the outermost shell is closer to the nucleus.

Reactivity remains constant.

Reactivity decreases because it becomes harder for the atom to gain an electron

Reactivity decreases because the boiling points decrease down the group

The radius of an atom is approximately 1×10 −10m, and the radius of a nucleus is approximately 1×10 −14m. If a teacher uses a ball of radius 1 cm to represent the nucleus, what radius object would represent the atom on the same scale?

A ball of radius 10 cm

A sports arena of radius 100m

An island of radius 10km

A planet of radius 1000km

Mendeleev arranged the elements primarily in order of atomic weight. Why did he sometimes reverse the order of some pairs of elements?

To arrange the elements in order of atomic number

To ensure the elements were arranged by density

To maintain consistency in properties down the vertical columns

To leave spaces for undiscovered Noble gases

Which process involves heating a liquid mixture to make the liquid evaporate, followed by cooling the vapour to make it condense, in order to separate a mixture?

Filtration

Crystallisation

Chromatography

Simple distillation

What is a key physical property that distinguishes transition metals from Group 1 alkali metals?

Transition metals are softer than Group 1 metals

Transition metals are typically less dense than Group 1 metals

Transition metals have much higher melting points than Group 1 metals

Transition metals only form ions with a +1 charge, similar to Group 1 metals

When sodium reacts with fluorine to produce sodium fluoride (NaF), what happens to the electron from the sodium atom?

It is shared with the fluorine atom to form a covalent bond

It is gained by the sodium atom to form a Na− ion

It is donated to the fluorine atom to form an ionic compound

It stays in the outermost shell of the sodium atom

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Topic 1 atomic structure and the Periodic Table