Flashcards

C1A

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Flashcards do conjunto (6)

1What is the Nucleus?-It is the middle of the atom.
-Contains protons (positively charged).
-Contains Neutrons (no charge).
2What are the electrons?-Move around nucleus.
-Negatively charged.
-Occupy shells around the nucleus.
3Why have atoms got no charge overall?The number of protons always equals the number of electrons. Protons and electrons have opposite charges, but they basically cancel out each other making the charge neutral.
4What are subatomic particles?Protons, neutron and electrons.
5what is the name given that contains only one type of atom?An element.
6How is an ion formed?Atoms can lose or gain electrons. -an atom loses one or more electrons, it becomes a positively charged ion
-an atom gains one or more electrons, it becomes a negatively charged ion