The names of the charged particles within all atoms and their relative positions are:

Protons in the nucleus and electrons orbiting the nucleus

Most of the mass of any atom is:

Concentrated in the nucleus, orbiting particles are tiny

The particle called the 'neutron' is one which:

Gives mass to the atom but not charge

The particles that make up and atom AND their charges, are:

Protons -positive, Electrons-negative & neutrons- no charge

The modern Periodic Table arranges elements in order of increasing:

Atomic number - the number of protons in the nucleus

Atoms are often drawn as follows and the diagram shows that:

All of the above features are true

This symbol for Helium is a short-hand way of showing each atom of the element has:

2 protons in the nucleus and a mass of 4 units

An atom of an element would have its chemical properties changed if:

A proton was removed from its nucleus

A true statement about atoms of one particular element is that they:

Always have the same number of protons in their nuclei.

In the modern Periodic Table, the metallic elements tend to be found:

Towards the left side of the table.

A current model of an atom would propose that:

It has a positively charged nucleus where most the mass lies

Atoms of elements generally have no electrical charge. This is because:

The positive charge is cancelled by an equal negative charge

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Year 10 Chemistry Basics

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Year 10 #Chemistry basics - atoms, ions, periodic table, chemical equations

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Questions 20

Answers

1
The names of the charged particles within all atoms and their relative positions are:
Protons & neutrons in nucleus, electrons orbiting nucleus
Electrons in the nucleus and protons orbiting the nucleus
Protons in the nucleus and electrons orbiting the nucleus
Protons in the nucleus and neutrons orbiting the nucleus
2
Most of the mass of any atom is:
In either nucleus or orbiting particles depending on atom
Equally distributed between the nucleus & orbiting particles
Concentrated in the nucleus because aelectrons are present
Concentrated in the nucleus, orbiting particles are tiny
3
The particle called the 'neutron' is one which:
Adds charge to the atom but not mass
Explains why atoms of an element have different charges
Can have different charges & is only present in the nucleus
Gives mass to the atom but not charge
4
The particles that make up and atom AND their charges, are:
Protons - positive, and Electrons and Neutrons -negative
Protons -positive, Electrons-negative & neutrons- no charge
Protons and electrons (positive) and neutrons - no charge
Protons (no charge), Electrons-negative & neutrons -positive
5
Which of the following is an example of a chemical change?
Lead melting
Ice cracking
Milk souring
Sugar dissolving
6
This picture shows a model of the element -
Helium
Flourine
Beryllium
Oxygen
7
The modern Periodic Table arranges elements in order of increasing:
Atomic mass - just as the original one did
Atomic number - the combined number of protons and neutrons
Atomic number - the number of protons in the nucleus
Densities of the elements
8
Atoms are often drawn as follows and the diagram shows that:
There is a lot of space within the atom itself
Sub-atomic particles appear to be orbiting a central object
All of the above features are true
There is a dense, central region in the atom
9
Semi-metals have properties similar to those of:
Both metals and non metals
Metals
Non-metals
Gases
10
This symbol for Helium is a short-hand way of showing each atom of the element has:
2 electrons orbiting the nucleus that has 4 protons in it
2 protons in the nucleus and a mass of 4 units
4 electrons and 2 protons in it
A total of 4 particles - 2 are protons and 2 are electrons
11
An atom of an element would have its chemical properties changed if:
A neutron was removed from its nucleus
An electron was removed from the atom
Any of the above were to occur
A proton was removed from its nucleus
12
A true statement about atoms of one particular element is that they:
Are all absolutely identical to one another
Sometimes have different numbers of protons in their nuclei
Always have the same number of protons in their nuclei.
Always have the same number of neutrons in their nuclei
13
The Atomic number of an element is equal to the number of:
Protons
Protons, neutrons and electrons
Electrons and neutrons
Electrons
14
What is the name used for elements in region 4?
Reactive metals
Noble gases
Semi-metals
Transition metals
15
In which region of this table would the non-metals be found?
1
2
3
4
16
The number of neutrons in an atom may be determined by:
Mass number + Atomic number
Mass number divided by Atomic number
Mass number - Atomic number
Atomic number - Mass number
17
In the modern Periodic Table, the metallic elements tend to be found:
Towards the right side of the table.
Scattered equally throughout the table.
Only at the top of the table.
Towards the left side of the table.
18
A current model of an atom would propose that:
The majority of its mass is concentrated on the outer edges
It is composed of particles that themselves have no charge
There are only positive and negative particles in the atom
It has a positively charged nucleus where most the mass lies
19
According to the Periodic Table, which element most readily accepts electrons?
Aluminium
Nitrogen
Fluorine
Sodium
20
Atoms of elements generally have no electrical charge. This is because:
The particles of which they are composed have no charge
There are 3 types of charges that balance each other out
The positive charge is cancelled by an equal negative charge
They are nearly always in a combined state with other atoms

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