The atomic number of an atom is defined as the number of
- neutrons in the nucleus of that atom
- protons in the nucleus of that atom
- electrons in the nucleus of that atom
- protons and neutrons in the nucleus of that atom
Protons have
- Negative charge
- Positive charge
- No charge
- Variable charge
In a neutral atom the number of protons is equal to
- the number of electrons
- the number of neutrons
- the no. of neutrons minus the no. of electrons
- the mass number minus the atomic number
The formula for Iron Sulfide is
- Fe2SO4
- FeSO4
- FeS
- FeS2
An element which contains 9 protons and 10 neutrons is
- Beryllium
- Fluorine
- Calcium
- Neon
Which of the following is a metal
- Silicon
- Carbon
- Boron
- Lithium
The noble gases are elements which are
- Inert
- Reactive
- Unstable
- Explosive
The elements represented by the symbols K and F are
- Sodium and Phosporous
- Potassium and Flourine
- Sodium and Fluorine
- Chlorine and Phosphorous
The elements of Group 1 are commonly known as
- Alkaline Earth Metals
- Alkali Metals
- Noble gases
- Transition metals
Which of the following is the odd one out
- Helium
- Chlorine
- Neon
- Argon
Atoms of the alkaline earth metals have
- A full outer electron shell
- One electron in their outer electron shell
- Six electrons in their outer shell
- Two electrons in their outer shell
Atoms of the inert gases have
- A full outer electron shell
- One electron in their outer electron shell
- Seven electrons in their outer shell
- No electron shells
Which of the following is the most reactive
- Calcium
- Aluminium
- Sodium
- Magnesium
To what family do chlorine and bromine belong to
- The inert gases
- The Halogens
- The noble gases
- The transition elements
The electronic configuration of chlorine is
- 2,8,7
- 2,2,8,1
- 2,8,8
- 2,8,1
Which of the following have the most similar properties
- Calcium and Potassium
- Sodium and Magnesium
- Sodium and Potassium
- Sodium and Calcium
The octet rule states that when bonding occurs
- atoms tend to reach an electron arrangement with eight electrons in the outer shell
- atoms tend to gain, lose, or share electrons
- atoms that have eight electrons in their outer shell are very reactive
- atoms that have eight electrons in their outer shell are very unreactive
Magnesium Oxide is formed when magnesium and oxygen atoms react in the ratio
- 2:1
- 1:1
- 1:2
- 1:3
The force of attraction between oppositely charged ions in a compound is called
- An electonic configuration
- An electrical field
- An ionic bond
- A covalent bond
Which of the following is false?
- Ionic compounds usually have low melting points
- Ionic compounds are usually solid at room temperature
- Ionic compounds are usually soluble in water
- Ionic compounds usually conduct electricity
Which of the following is a covalent compound
- Copper Sulphate
- Magnesium Oxide
- Common table salt
- Ammonia
Covalent bonding involves
- the loss or gain of electrons
- the sharing of electrons
- the attraction of charged atoms
- the force of attraction between pairs of electrons
Covalent compounds usually consist of
- separate individual molecules
- loosely held together groups of molecules
- giant structures of charged atoms
- a small number of atoms