CBA 4 Chemistry Review

Front

How many Magnesium atoms are in 10MgCl₂?

Back

10

Front

Which of these is not a chemical reaction? (Burning of wood, Milk going bad, Mixing vinegar and baking soda, Melting of ice)

Back

Melting of ice

Front

How many elements are in C₆H₁₂O₆? (1, 2, 3, 4)

Back

3

Front

What is the term for the number in front of a compound or element? (Subscript, Coefficient, Superscript, Charge)

Back

Coefficient

Front

Which element is least likely to conduct heat and electricity? (O, Si, Po, Ca)

Back

O

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

Define 'element'.

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.