Practice Compounds Of Transitional Elements Multiple Choice Questions with Answers Quiz-3

Q.1.

Tearing paper into small pieces is a -

Q.2.

Your bicycle rust when left outside. This is evidence of a -

Q.3.

How many elements are present in this compound?NaHCO3

Q.4.

How many elements are in this compound?B6Cl2OH

Q.5.

HeBased on this symbol, what can you tell about Helium (He)?

Q.6.

CO + H > CO2 + H2Which substance represented in this equation is classified as an ELEMENT?

Q.7.

Which list contains only elements and a reason why they are elements?

H2O, NaCl, N2, CO2, Substances are elements because they they contain more than one chemical symbol.
Kr, Ne, Ar, He, Substances are elements because they are noble gases.
Cl2, H2, Na, He, Substances are elements because they are pure.
F2, O2, Li, H, Substances are elements because they all have chemical symbols.

Q.8.

When you add pickle juice to baking soda you observe bubbling and fizzing. What can you determine about the new substance that has been formed?

Q.9.

Which contains only CHEMICAL changes (new substance formed or cannot be undone)?

Silver spoon tarnishLeaves change colorWater separating into hydrogen and oxygen
Ice melting Sugar Cube dissolvingPaper tearing
Dry ice goes from solid to liquid Your breath condensing on a windowGlass breaking
Mixing flour, salt, and sugarSanding woodGrinding something into powder

Q.10.

Water ( H2O) is a compound because-