Which Is a Pure Substance

question 8

Multiple Choice

Which is a pure substance?

• A)table salt
• B)bronze
• C)air
• D)soil

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Definitions:

Behavioural Problems

Actions or behaviours that are inappropriate or problematic, often observed in children and adolescents, which can affect learning and social interactions.

1930s

A decade spanning from the year 1930 to 1939, often associated with major economic turmoil due to the Great Depression.

1940s

A decade in the 20th century, notable for events such as World War II and the beginning of significant social and technological changes.

1950s

A decade in the 20th century characterized by post-World War II recovery, economic prosperity, and significant cultural and technological developments.