Year 9 chemistry

All matter is made up of

(a)  

atoms are made up of?

• electrons, protons, and ions
• photons, electrons, and protons
• molecules, neutrons, and protons
• protons, neutrons, and electrons

a molecule is ?

(a)  

what is an ion

• An ion is an atom or molecule that has a net electrical charge.
• An ion is a type of plant commonly found in tropical regions
• An ion is a type of gas found in the atmosphere
• An ion is a type of rock formed from volcanic activity

how many protons does calcium have?

• 20
• 22
• 25
• 18

how many neutrons does Chlorine have

• 20
• 16
• 22
• 18

how do you calculate a neutron using the periodic table

• Neutron = Atomic mass + Atomic number
• Neutron = Atomic mass x Atomic number
• Neutron = Atomic mass / Atomic number
• Neutron = Atomic mass - Atomic number

whats a atomic mass

• The atomic mass is the total mass of an atom, which is the sum of the protons and neutrons in the nucleus.
• The atomic mass is the weight of an atom in grams
• The atomic mass is the number of electrons in an atom
• The atomic mass is the charge of an atom

how would aluminium ion join to a chlorine ion

• Through ionic bonding, with the aluminum ion donating its three electrons to the chlorine ion.
• Through hydrogen bonding, with the aluminum ion attracting the chlorine ion through hydrogen atoms.
• Through metallic bonding, with the aluminum ion forming a sea of electrons with the chlorine ion.
• Through covalent bonding, with the aluminum ion sharing its three electrons with the chlorine ion.

what is a positively charged ion called

• anion
• negatron
• proton
• cation