Matter

Question	Answer
What are the linear particles in an atom called?	Sub-atomic particles.
What are isotopes?	Isotopes are atoms with the same number of protons but a different number of neutrons.
Which physicist and their students discovered the nucleus of an atom?	Ernest Rutherford.
How are atoms perceived as to be like before the discovery of the nucleus?	Before the nucleus was discovered scientists thought the atom was like a plum pudding.
What is the atomic number of an atom equal to?	The atomic number in an atom is equal to the number of protons and electrons.
What is the mass number of an atom equal to?	The mass number in an atom is equal to the total number of protons and neutrons.
What does an atom become when an electron is added or removed from it's outer shell?	A charged ion.
“When ions have the same type of charge they _____ each other, whereas oppositely charged ions _______.”	“When ions have the same type of charge they attract each other, whereas oppositely charged ions attract.”
What is the difference between an isotope and an element?	The atomic mass.
Why is it that isotopes have a different atomic mass number but are of the same element?	Isotopes are atoms with the same number of protons but a different number of neutrons and though neutrons have no charge, they have an impact on the atomic mass of an atom, making it a different version of itself.

Resource summary

	Created by Grace Kusimo over 2 years ago