Unit 1 Review PS

Multiple Choice

Which of the following subatomic particles has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

Open Ended

Why is understanding atomic structure important in the study of chemistry?

Fill in the Blanks

The atomic number of an element is equal to the number of

in its atom.

Multiple Choice

Which of the following statements best describes isotopes?

• Atoms of the same element with different numbers of neutrons

• Atoms of different elements with the same number of protons

• Atoms of the same element with different numbers of protons

• Atoms of different elements with the same number of neutrons

Multiple Choice

What type of ion is formed when an atom loses electrons?

• Cation

• Anion

• Isotope

• Neutron

Open Ended

Explain how the arrangement of elements in the periodic table relates to their chemical properties.

Multiple Select

Which of the following are properties of metals on the periodic table?

• Shiny appearance

• Poor conductors

• Lose electrons easily

• Form positive ions

Multiple Choice

Which elements are liquids at room temperature?

• Mercury and Bromine

• Hydrogen and Oxygen

• Fluorine and Chlorine

• Silicon and Boron

Multiple Choice

Which of the following statements about valence electrons is correct?

• They are the outer shell electrons that determine chemical reactivity.

• They are found in the nucleus of the atom.

• They are responsible for the mass of the atom.

• They are only present in noble gases.

Multiple Select

Which of the following are characteristics of ionic compounds?

• High melting points

• Form between nonmetals

• Conduct electricity when dissolved

• High boiling points

Multiple Choice

What is a key difference between ionic and covalent compounds?

• Ionic compounds form between metals and nonmetals, while covalent compounds form between nonmetals.

• Ionic compounds have lower melting points than covalent compounds.

• Covalent compounds conduct electricity when dissolved.

• Ionic compounds are always liquids at room temperature.

Open Ended

Explain the steps involved in writing the formula for an ionic compound, using CaO as an example.

Fill in the Blanks

The correct name for KBr is Potassium

.

Multiple Choice

Which prefix is used to indicate 'three' atoms in the naming of covalent compounds?

• tri-

• di-

• tetra-

• penta-

Open Ended

How does the structure of an atom ensure that a neutral atom has no overall charge?

Multiple Choice

What are the three key components of an atom and what are their respective charges?

• Protons (positive), Neutrons (neutral), Electrons (negative)

• Protons (negative), Neutrons (positive), Electrons (neutral)

• Protons (neutral), Neutrons (negative), Electrons (positive)

• Protons (positive), Neutrons (negative), Electrons (neutral)

Multiple Choice

Which of the following is NOT listed as a key concept for review in this lesson?

• Atomic structure

• Periodic table organization

• Chemical reactions

• Ionic vs. covalent bonds