True or false on atoms and elements

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Most alpha particles passed straight through.

2. Statement is true

   No

   Statement

   Isotopes differ in their atomic number.

3. Statement is true

   Yes

   Statement

   Isobars share the same mass number.

4. Statement is true

   No

   Statement

   Tritium is common on the earth.

5. Statement is true

   Yes

   Statement

   A black body is a perfect radiator.

6. Statement is true

   Yes

   Statement

   Quantum energy rises with frequency.

Instructions

Decide whether each statement is true or false.

Explanation