Inv. 4 and 5 Fast and Curious

Front

Where are metalloids located on the periodic table?

Back

Metalloids are located along the zig-zag line of the periodic table, which separates metals and nonmetals.

Front

What is the modern description of electrons in atoms called?

Back

The modern description of electrons in atoms is called the Quantum mechanical model.

Front

What is an anion's charge?

Back

An anion has a negative charge.

Front

Which principal energy level is closest to the nucleus and has the lowest energy?

Back

Principal energy level 1 is closest to the nucleus and has the lowest energy.

Front

Which isotope of bromine has a mass of 79 amu?

Back

Bromine-79 is the isotope with a mass of 79 amu.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.

Front

What is the charge of a cation?

Back

A cation has a positive charge.

Front

What is the significance of the principal energy levels in an atom?

Back

Principal energy levels indicate the distance of electrons from the nucleus and their energy; the lower the level, the closer and lower the energy.

Front

What is the difference between an isotope and an ion?

Back

An isotope is a variant of an element with a different number of neutrons, while an ion is an atom that has gained or lost electrons, resulting in a charge.

Front

What does the term 'atomic mass unit' (amu) refer to?

Back

Atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale, defined as one twelfth of the mass of a carbon-12 atom.