How can the number of electrons in an element be determined from the periodic table?

It's the same as the element's atomic number.

A charged particle due to a gain or loss of electrons

An element is in Group 2 and Period 3 of the periodic table, which of these statements is true?

Element has 2 electrons in its outer shell, and 3 shells.

Which of these is not true of covalent compounds?

They can conduct electricity when melted.

A version of an element, with more or fewer neutrons.

What do metallic bonds consist of?

Delocalised electrons and positive metal ions in a lattice.

Which of these is not a property ionic compounds?

They conduct electricity when solid

What does the Relative Atomic Mass tell us about an element?

The average mass of all the isotopes of an element.

A mole of any substance contains?

The same number of particles as a mole of another substance

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Fundamentals of Chemistry

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Questions 18

Answers

1
How can the number of electrons in an element be determined from the periodic table?
It's the same as the element's mass number.
It's the same as the element's group number.
It's the same as the element's atomic number.
It's the same the period the element is in.
2
What type of bond is shown between the carbon atom and the oxygen atoms
An ionic bond
A single covalent bond
An ionic lattice
A double covalent bond
3
Which of these is not a potential use of fullerenes?
Delivering drugs to directly to body cells
High energy fuels
Adding tensile strength to sports equipment
Electrical conductors
4
Which elements will form covalent bonds?
A metal and a non-metal
Two salts
Two non-metals
Two metals
5
What is an ion?
An atom that has gained or lost neutrons
A charged particle due to a gain or loss of electrons
An atom that has gained or lost protons
Charged particle due to gain or loss of protons.
6
An element is in Group 2 and Period 3 of the periodic table, which of these statements is true?
The element has two electron shells and 3 electrons.
The element will form negative ions
Element has 3 electrons in its outer shell and 2 shells.
Element has 2 electrons in its outer shell, and 3 shells.
7
Which of these is not true of covalent compounds?
They can conduct electricity when melted.
They have simple molecular structures.
The larger molecules have larger intermolecular forces.
They have low melting and boiling points.
8
Which subatomic particles are found in the nucleus?
Protons and Neutrons
Ions and Neutrons
Protons and Electrons
Electrons and Ions
9
What is an isotope?
A version of an element, with more or fewer neutrons.
A version of an element, with fewer electrons.
A version of an element, with more or fewer protons.
A version of an element with more electrons.
10
In 1887 JJ Thompson devised a new theory for the structure of the atom. What was it called?
The Plum Pudding Model
The Solar System Model
The Choc-Chip Muffin Model
The Solid Sphere Model
11
Ionic bonds occur between?
A gas and a liquid
A metal and a non-metal
Two non-metals
Two metals
12
What do metallic bonds consist of?
Free electrons surrounding covalent bonds.
Delocalised electrons and positive metal ions in a lattice.
A mixture of metal atoms in a lattice.
Ionic lattice between metals and non metals.
13
What is shown in the image?
Graphite
Diamond
Graphene
Buckminsterfullerene
14
What charge does a proton have?
Balanced charge
No charge
Positive
Negative
15
Which of these is not a property ionic compounds?
They form giant ionic lattices
They have high melting and boiling points
Most dissolve easily in water
They conduct electricity when solid
16
What is the electron configuration of Nitrogen?
2.8.8
2.5
3.5
2.4
17
What does the Relative Atomic Mass tell us about an element?
The average mass of the atoms and ions of an element.
The average mass of all the isotopes of an element.
The total number of protons and neutrons in an atom.
How the mass of an atom is relative to Carbon-12.
18
A mole of any substance contains?
The same number of particles as 1kg of carbon
6.02 particles.
The same number of particles as a mole of another substance
1 dm3 of the substance

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