Physical Science '24 MIDTERM

Front

What is the electron configuration of Iron (Fe)?

Back

Iron (Fe) has an atomic number of 26, so its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.

Front

How many electrons does the ion Fe^{2+} have?

Back

Fe^{2+} has 24 electrons.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties.

Front

Which of the following is NOT a mixture: Sugar, Paint, Crude oil, Air?

Back

Sugar is NOT a mixture; it is a pure substance.

Front

What is the atomic number of Sodium (Na)?

Back

The atomic number of Sodium (Na) is 11.

Front

How many protons does Sodium have?

Back

Sodium has 11 protons.

Front

What happens during nuclear fission?

Back

During nuclear fission, a nucleus divides into two or more smaller nuclei.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction.

Front

What is an example of a chemical property?

Back

An example of a chemical property is the ability of iron to rust.

Front

What is a physical property?

Back

A physical property is a characteristic that can be observed or measured without changing the substance's identity.