Topic 9 Quiz

Which one of these statements is true about the items that make up the atom?
1. The negative protons and neutral neutrons are found in the nucleus while there are positive electrons orbiting the nucleus
2. The protons, neutrons, and electrons are all found in the nucleus.
3. The positive protons and neutral neutrons are found in the nucleus while there are negative electrons orbiting the nucleus
4. Protons and electrons are found in the nucleus while the neutrons orbit the nucleus.
An electron is removed from an atom. This turns it into
1. a new element
2. an isotope
3. a negatively charged ion
4. a positively charged ion
The relative masses of electrons are as follows:
1. the proton and neutron have a relative mass of 1, while the electron has a mass of 1/1800
2. the proton and neutron have a relative mass of 1, while the electron has a mass of 1
3. the proton and neutron have a relative mass of 1, while the electron has a mass of 1800
4. the electron and neutron have a relative mass of 1, while the proton has a mass of 1/1800
The charges on the proton, the neutron, and the electron are as follows:
1. the proton has a charge of +1 and neutron has a charge of 0, while the electron has a charge of +1
2. the proton has a charge of +1 and neutron has a charge of 0, while the electron has a charge of -1
3. the proton has a charge of -1 and neutron has a charge of 0, while the electron has a charge of +1
4. the proton has a charge of +1 and neutron has a charge of -1, while the electron has a charge of 0
The number of protons in an element is called:
1. the mass number
2. the nucleon number
3. the atomic number
4. the isotope number
If an extra proton is added to the nucleus of an element:
1. a new isotope is formed
2. a positive ion is formed
3. an alpha particle is formed
4. a new element is formed
An alpha particle consists of
1. a helium atom
2. a helium nucleus
3. a helium ion
4. a helium isotope
A beta particle is:
1. a neutron
2. a proton
3. an electron from the nucleus
4. an electron from the electron shells
The plum pudding model of the atom states that:
1. Electrons are held in a matrix of positive charge
2. Protons are held in a matrix of negative charge.
3. Electrons and neutrons are held in a matrix of positive charge.
4. There is a central nucleus.
Which one of these did Rutherford's Alpha scattering experiment NOT show?
1. The nucleus is very small
2. Most of the atom is empty space
3. The nucleus is positively charged
4. There are neutrons in the nucleus.