Edexcel GCSE CC3 and CC4 Atomic Structure

What is the correct charge and mass for a proton?

• Charge = -1 Mass = 1

• Charge = + 1 Mass = 1

• Charge = +1 Mass = Negligible

• Charge = -1 Mass = Negligible

What is the correct charge and mass for a Neutron?

• Charge = -1 Mass = 1

• Charge = + 1 Mass = 1

• Charge = 0 Mass = 1

• Charge = -1 Mass = Negligible

What is the correct charge and mass for an Electron?

• Charge = -1 Mass = 1

• Charge = + 1 Mass = 1

• Charge = 0 Mass = 1

• Charge = -1 Mass = Negligible

What is the charge of the nucleus of atoms and why.

• Positive because the nucleus only consists of protons and neutrons

• Positive because the nucleus only contains protons

• Negative because the nucleus contains electrons

• Neutral because the charges of the protons and neutrons cancel each other out

In Rutherford's gold foil experiment to determine the structure of an atom one observation was: Most of the alpha particles passed straight through. What is the explanation for this?

• Nearly all the mass of at atom is found in the nucleus

• An atom has electrons on shells

• The nucleus is positive

• An atom is mostly made up of empty space

In Rutherford's gold foil experiment to determine the structure of an atom one observation was: Some alpha particles were slightly deflected. What is the explanation for this?

• Nearly all the mass of at atom is found in the nucleus

• An atom has electrons on shells

• The nucleus is positive

• An atom is mostly made up of empty space

In Rutherford's gold foil experiment to determine the structure of an atom one observation was: Very few alpha particles bounced back. What is the explanation for this?

• Nearly all the mass of at atom is found in the nucleus

• An atom has electrons on shells

• The nucleus is positive

• An atom is mostly made up of empty space

Where do you find the mass number of an element and what does it mean?

• Top of the symbol it shows the number of protons and neutrons

• Top of the symbol it shows the number of protons and electrons

• Bottom of the symbol it shows the number of electrons and neutrons

• Bottom of the symbol it shows the number of protons

Where do you find the atomic number of an element and what does it mean?

• Top of the symbol it shows the number of protons and neutrons

• Top of the symbol it shows the number of protons and electrons

• Bottom of the symbol it shows the number of electrons and neutrons

• Bottom of the symbol it shows the number of protons

What is an isotope?

• A different element that has the same number of neutrons

• The same element with a different mass as it has a different number of neutrons

• The same element with a different mass as it has a different number of protons

• A different element that has the same number of protons