@Aluminium forms an ion Al and oxygen an ion O. What is the formula of aluminium oxide?
AlO
AlO
Al

@An electrolyte will pass an electric current because it has many free moving:
Ions
Electrons
Molecules

@Which one of the following contains 10 electrons, 11 protons and 12 neutrons
Na
Mg
F

@The atomic number of an atom is the number of:
Protons
Protons and neutrons added together
Neutrons

@What is the atomic structure of the O ion?
10 electrons, 8 protons & 8 neutrons
8 electrons, 8 protons & 8 neutrons
8 electrons, 10 protons & 8 neutrons

@Which statement is INCORRECT for protons?
Protons orbit the nucleus
Protons are similar in mass to neutrons
Protons carry a positive charge

@Which one of the following ions does not normally exist?
Na
Ca
Fe

@Which one of the following statements about the sodium atom is wrong?
It has 12 protons
Its atomic number is 11
It has a mass number of 23

@Which of the following contains 26 protons, 26 neutrons and 23 electrons?
Fe
Co
Cr

@Which one of the following contains the same number of electrons as neon?
O
Li
Cl-

@If an atom has a mass number of 4, then which one of the following could be correct
The nucleus contains 2 protons and 2 neutrons
The nucleus contains 4 neutrons
The nucleus contains 2 protons and 2 electrons

@Isotopes have:
The same number of protons, but different numbers of neutrons
One more electron in the neutral atom than protons
Different numbers of protons and electrons in the neutral atom

@Which of the following is incorrect for neutrons?
They are similar in mass to electrons
They carry no charge
They do not orbit the nucleus

@Which of the following shows an atom with an atomic mass of 9?
5 neutrons, 4 protons and 4 electrons
19 neutrons, 9 protons and 9 electrons
4 neutrons, 4 protons and 1 electron

@In which one of the following sets do all the elements have two atoms in each molecule at room temperature?
Nitrogen, Oxygen and Fluorine
Hydrogen, Fluorine and Neon
Chlorine, Nitrogen and Argon

@Which of the following is incorrect for electrons?
They carry a smaller negative charge than protons positive charge
They can be removed from the atom altogether
In a neutral atom there are as many as many protons

@Which of the following elements are arranged in order of decreasing atomic mass?
Ar, K and Cl
K, Ar and Cl
Cl, Ar and K

@Which one of the following, about the charges of particles, is correct?
Protons positive, electrons negative and  neutrons neutral
Neutrons & protons positive and electrons negative
Neutrons negative, protons and electrons  neutral

@Red circles are protons, blue are neutrons. Which two atoms are chemically the same, but isotopes?
#isotope
Numbers one and three
Numbers four and one
Numbers three and four

@Carbon-14 is a radio active isotope of carbon. How many neutrons does an atom of carbon-14 have?
8
6
14