Year 10: Chemistry

What is the chemical symbol for Calcium?

• C
• Ca
• Cm
• Ci

A particle consisting of two or more atoms joined together is a ________

• element
• molecule
• compound
• sub atomic particle

Which subatomic particles are located in the nucleus?

• Electrons only
• Electrons and neutrons
• Protons and electrons
• Protons and neutrons

Which of the following is NOT a property of metals?

• malleable
• lustre
• brittle
• good electrical conductivity

What sub atomic particle orbits around the nucleus?

• Proton
• Neutron
• Atom
• Electron

Which of the following is correct?

• Proton = positive, neutron = negative, electron = neutral
• Proton = positive, neutron = neutral, electron = negative
• electron = positive, neutron = neutral, proton = negative
• neutron = negative, proton = neutral, electron = positive

Elements in the periodic table ______ in ___________ from the simplest element to the most complex.

• increase, atomic number
• increase, neutrons
• decrease, atomic number
• decrease, atomic mass

What is the total number of atoms present in the formula H₂SO_{4 ?}

• 1
• 3
• 6
• 7

A group on the periodic table is arranged ________ where as, a period is arranged ________.

• horizontally, vertically
• vertically, horizontally

An atom has an atomic number of 17. How many electrons would there be on each shell? (From inner to outer shell)

• 2, 10, 5
• 8, 8, 1
• 2, 8, 7
• 8, 7, 2