revision ch2

What is a property of substance?

• Temperature

• Volume

• Density

• Shape

What is not a type of mixture?

• Air

• Solution

• Smoke

• Suspension

'Molecules can be separated from each other using filtration.'

Is this a sentence on micro or on macro level?

• Macro

• Micro

The symbol of the element Potassium is:

• P

• Po

• K

• Ka

Which group in the periodic table is called the alkaline earth metals?

• Group 1

• Group 2

• Group 17

• Group 18

Which one is the correct writing for the symbol nitrogen?

• N

• N₂

Which group in the periodic table contains the halogens?

• Group 17

• Group 16

• Group 2

• Group 1

The symbol of the element Calcium is:

• Cl

• Ce

• C

• Ca

What is the term for a homogeneous mixture?

• Alloy

• Colloid

• Emulsion

• Solution

What is the chemical symbol for Oxygen?

• O

• O₂