Year 9 Cycle 1 The Periodic Table C2 Weekly Knowledge

Which scientist discovered that the nucleus contained neutrons?

• bohr

• Rutherford

• Dalton

• Chadwick

Which scientist discovered the electrons?

• Dalton

• Thomson

• Atristotle

• Bohr

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Alkali metals are found in which group of the periodic table?

• Group 1
• Group 2
• Group 7
• group 8 

What is formed when sodium reacts with water?

• sodium oxide and hydrogen
• sodium hydroxide and hydrogen
• sodium hydroxide and oxygen
• sodium hydroxide and carbon dioxide

What is another name for the elements in group 7?

• The Halogens
• The Noble gases
• The Oxides
• The Alkali Metals

Which halogens can displace bromide ions to make bromine?

• Fluorine and iodine.

• Fluorine and bromine.

• Fluorine and chlorine

• Chlorine and iodine.

Tags

NGSS.MS-PS1-2