Unit 1-6 Review

Front

What is the conclusion in scientific research?

Back

The conclusion is the final statement that determines whether the hypothesis is correct or incorrect based on the analysis of the data.

Front

Define a compound in chemistry.

Back

A compound is a substance made up of atoms of two or more different elements joined by chemical bonds.

Front

What happens to atomic radius as you move from left to right across the periodic table?

Back

The atomic radius decreases because the number of protons increases, leading to a stronger attraction to the electrons.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract electrons from another atom.

Front

Define ionization energy.

Back

Ionization energy is the energy needed to remove the outermost electron from an atom.

Front

What is the role of a hypothesis in scientific research?

Back

A hypothesis is a proposed explanation for a phenomenon that can be tested through experimentation.

Front

Explain the difference between an element and a compound.

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the significance of the periodic table in chemistry?

Back

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

Front

How does the number of energy levels affect atomic size?

Back

As the number of energy levels increases, the atomic size generally increases due to the addition of electron shells.

Front

What is the relationship between atomic mass and atomic number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while atomic number is the number of protons in the nucleus of an atom.