Semester 1 Exam

Front

Convert this number into scientific notation: 0.068

Back

6.8 x 10^-2

Front

What is the Bohr model of an atom?

Back

A model that depicts electrons orbiting the nucleus in defined paths or shells.

Front

Convert to standard notation: 3.05 x 10^5

Back

305,000

Front

Calculate, giving the answer in the correct number of significant digits: 9.3 - 2.003 = ?

Back

7.3

Front

Who created the plum pudding model?

Back

JJ Thomson

Front

What is scientific notation?

Back

A way of expressing numbers as a product of a coefficient and a power of 10.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in the decimal part.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom's nucleus and defines the element.

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length x width.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.