Chemistry Topic 4 Quiz

13 Questions | By Christiefiona3 | Last updated: Mar 21, 2022 | Total Attempts: 120

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A quiz on topic 4- How atoms combine.

Questions and Answers

1.

What is an element?
- A.
  
  A substance made of two or more different atoms chemically joined together.
- B.
  
  A substance made of only one type of atom.
- C.
  
  A group of non-metal atoms which are chemically joined together.
- D.
  
  I don't have a clue.
2.

Which of these is a diatomic element?
- A.
  
  Calcium
- B.
  
  Gold
- C.
  
  Hydrogen
- D.
  
  Phosphorus
3.

What is a compound?
- A.
  
  A substance made of only one type of atom.
- B.
  
  A substance made of two or more different atoms chemically joined together.
4.

Why are noble gases different from other non-metal elements? (choose 2 answers)
- A.
  
  They do not exist as molecules, but as single atoms.
- B.
  
  They are very reactive.
- C.
  
  They are very un-reactive.
- D.
  
  They exist as molecules.
5.

Each atom of every noble gas has an outer energy level which is
6.

Atoms of non-metal elements (except noble gases) obtain a stable electron arrangement like the noble gases by chemically joining with other non-metal atoms. What are the forces of attraction which hold these atoms together called?
- A.
  
  Bridges
- B.
  
  Joints
- C.
  
  Bonds
7.

When is a covalent bond formed?
- A.
  
  When two non-metal atoms share a pair of protons
- B.
  
  When two non-metal atoms share a nucleus.
- C.
  
  When two non-metal atoms share a pair of electrons.
- D.
  
  When two non-metal atoms share a pair of neutrons.
8.

The nucleus, in the centre of an atom, has which charge?
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Neutral
9.

When is a double bond formed?
- A.
  
  When a pair of electrons is shared between three atoms.
- B.
  
  When two pairs of electrons are shared between two atoms.
- C.
  
  When an electron is shared between two atoms.
10.

What is the shape of this molecule called?
- A.
  
  Linear
- B.
  
  Planar
- C.
  
  Pyramidal
- D.
  
  Tetrahedral
11.

What do the following prefix's mean: Mon- , Di-, Tri-, Tetra-
- A.
  
  Mon- means 1, Di- means 2, Tri- means 4, Tetra- means 3
- B.
  
  Mon- means 1, Di- means 2, Tri- means 3, Tetra- means 4
- C.
  
  Mon- means 2, Di- means 4, Tri- means 3, Tetra- means 1
- D.
  
  Mon- means 4, Di- means 2, Tri- means 3, Tetra- means 1
12.

What information is given by the symbols in a formula?
- A.
  
  The elements in the molecule.
- B.
  
  The size of the molecule.
13.

What information is given by the numbers in a formula?
- A.
  
  The size of the molecule
- B.
  
  The amount of each element present in the molecule.