In solids, there are strong forces of attraction between particles, which holds them close together in fixed positions to form a regular lattice arrangement.
Respuesta
True
False
Pregunta 2
Pregunta
What can change the particles?
Respuesta
Physical changes.
Arrangement or energy.
Pregunta 3
Pregunta
The mass number is the total of protons and neutrons.
Respuesta
True
False
Pregunta 4
Pregunta
The atomic number tells you the number of electrons there are.
Respuesta
True
False
Pregunta 5
Pregunta
What is the relative mass of an electron?
Respuesta
1
1/2000
Pregunta 6
Pregunta
Giant Ionic Compounds have low melting points and boiling points.
Respuesta
True.
False - they have high melting and boiling points.
Pregunta 7
Pregunta
A covalent bond is a shared pair of electrons.
Respuesta
True
False
Pregunta 8
Pregunta
The formula to calculate the number of moles is Mass (in grams) of element or compound / Mr of element or compound