Heat causes chemical reaction so that might be a way in which people use chemical properties to separate one substance from another substance .
Answer:
The Birth of Mass Culture During the 1920s, many Americans had extra money to spend, and they spent it on consumer goods such as ready-to-wear clothes and home appliances like electric refrigerators. In particular, they bought radios.
via history.com
Explanation:
Within the first two to four months of the bombings, the acute effects of the atomic bombings killed 90,000–146,000 people in Hiroshima and 39,000–80,000<span> in Nagasaki; roughly half of the deaths in each city occurred on the first day.
hope this helps :D</span>
