1. Periodic Table

Who created the periodic table by arranging elements by atomic mass?

• Mendeleev

• Moseley

• Bohr

Who reordered elements by atomic number making the modern periodic table?

• Mendeleev

• Moseley

• Bohr

• Gases: Elements on the far ​ (a)   side of the table are usually gases at room temperature.

• Liquids: Very ​ (b)   elements are liquids at room temperature and pressure.

• Solids: Most elements to the ​ (c)   of the table are solids at room temperature and pressure.

• right
• few
• left

What state is Oxygen at room temperature?

• Gas

• Solid

• Liquid

________ is one of the few elements that is liquid at room temperature.

Shiny, reflective, good conductor of heat and electricity. Ii can be hammered and I am usually solid, except for mercury. What am I?

• Metal

• Non-metal

What are state are the elements in blue?

• Solid

• Liquid

• Metals

• Gases

What are state are the elements in red?

• Solid

• Liquid

• Metals

• Gases

Varied appearance. I don't conduct heat or electricity well. I usually break easily and can be a gas, solid or liquid. I am more reactive.

• Metals

• Non-metals

• Hydrogen (H): The name "hydrogen" comes from the ​ (a)   words "hydro" (meaning ​ (b)   because hydrogen, when it burns, forms water.

• Greek
• water