Chemistry chp1 (atoms and atomic strutures)

memorize

atoms

matter is made up of tiny particles which are know as?

Electron

what substance has a -1 electric charge and has a symbol representive (e-)

empty

Most space in a atom is?

Proton

what substance has a +1 electric charge? and also have a symbol (p)

Neutron

what substance has a zero electric charge and has a representive symbol (n)

subatomic particles

Protons, Electrons and neutrons are known as?

protons and neutrons

which two subatomic particles has the same masses? (both are almost at the unit ‘1’)

Electrons

which subatomic particles is the lightest?

electrons and protons

which two subatomic particles have the same amount inside an atom?

electrically neutral

‘Atoms are always_________’ (no charge)

at the centre

Give me the position of protons inside an atom

orbits on electric shell

Give me the position of electrons inside an atom

at the centre

give me the position of neutrons inside an atom

Made up of two or more elements that are chemically combined.

What is the definition of ‘compounds’ which is used for describe some substances

Made up of only one kind of atoms

what is the definition of ‘Elements’ which is used for describe some of the substances