Atoms, Elements, Compounds and Limestone Flashcards
What charge do electrons have?
Negative
What charge do neutrons have?
Neutral
The number of electrons equals the number of _______.
Protons
The number of ____ on the outer shell shows the group that the element is in.
Electrons
The most inner shell holds how many electrons max?
2
Not counting the inner shell, how many electrons do the shells hold max?
8
An atom is unreactive and stable if it has what?
Full outer shells.
What does me+aL mean?
Metals become positive.
They are losers as they lose electrons.
What are ions?
When an atom gains or loses an electron and has a + or a - next to it.
Copper is a good conductor of electricity. What could It be used for?
Electrical wire.
Aluminium can be made into thin sheets. What is it good for?
Cooking foil.
Gold reflects light. What is it good for?
Jewellery
Brass can be used to make a noise. What is it good for?
Musical instruments.
Iron is cheap because there is a lot of it. What is it good for?
Gates
Tungsten can be heated until it is white hot. What is it good for?
Light bulbs.