Chem S1 Test Review M1-M6

Front

What is scientific notation?

Back

A way to express numbers as a multiple of two factors: a number between one and ten, and ten raised to a power (exponent).

Front

Which energy level is being filled with electrons in the period 4 transition elements?

Back

3rd energy level.

Front

How many protons are in potassium-47?

Back

19 protons.

Front

Is 'sterling silver' a homogeneous or heterogeneous mixture?

Back

Homogeneous mixture.

Front

Who is credited for the term 'atom'?

Back

Democritus.

Front

What is the definition of an atom?

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is the difference between a homogeneous and heterogeneous mixture?

Back

Homogeneous mixtures have a uniform composition, while heterogeneous mixtures have distinct, separate components.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.