Chemistry: S1 Final Review

Front

What are phase transitions?

Back

Phase transitions are changes from one state of matter to another, such as melting (solid to liquid) and condensing (gas to liquid). They are physical changes, not chemical changes.

Front

What classification do most elements on the periodic table fall under?

Back

Most elements on the periodic table are classified as metals.

Front

Which type of wave has a longer wavelength than microwaves?

Back

Radio waves have wavelengths longer than microwaves.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom or ion.

Front

Which element has the lowest ionization energy among Chlorine, Selenium, and Bromine?

Back

Selenium (Z = 34) has the lowest ionization energy among the three.

Front

What is the relationship between wavelength and energy?

Back

Wavelength and energy have an inverse relationship; as wavelength increases, energy decreases.

Front

Define a chemical change.

Back

A chemical change involves a transformation that alters the chemical composition of a substance, resulting in the formation of new substances.

Front

What are metalloids?

Back

Metalloids are elements that have properties intermediate between metals and nonmetals, often exhibiting characteristics of both.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, malleable, and good conductors of heat and electricity, while nonmetals are usually dull, brittle, and poor conductors.