Atoms and Bonding Test Review

The atomic number is the number of protons in the nucleus of the atom.

Copper, oxygen, and helium are examples of

In the chemical formula for an ionic compound, which item is written first?

​Ionic bonds form when valence electrons are __________ between atoms.​

Magnesium bromide is an ionic compound with the chemical formula MgBr₂. What does the “2” tell you?

​Fluorine (F₂) is a(n) _______ molecule because the valence electrons are shared equally between the two fluorine atom

The smallest particle of an element is called a(n)

What is a double bond?

A nonpolar bond is formed when two atoms share electrons unequally.

When electrons are shared between two atoms, a covalent bond is formed.

The atomic number is the number of

Which is a property shared by most molecular compounds?

An ionic bond is the attraction between

Ionic compounds are electrically

Which of the following statements is NOT a part of John Dalton’s atomic theory?

In the periodic table, atoms are arranged from left to right and from top to bottom in order of increasing

In Ernest Rutherford’s gold foil experiment, most positive charges passed through the foil, but a few deflected because

Electrons in a molecule of hydrogen fluoride (HF) are pulled more strongly toward the fluorine atom making it

Electrons involved in bonding between atoms are

​In a double covalent bond,________ electrons are shared between two atoms.​

Aluminum has 13 electrons. How many dots would it have in its electron dot diagram?

​Bonds that form between two nonmetal atoms usually are __________ bonds.​

Ions that are made of more than one atom are examples of

The attraction between a positive ion and a negative ion results in a covalent bond.

What is the greatest number of valence electrons an atom can have?

Water is polar and oil is nonpolar. What happens when the two liquids are poured into the same container?

Each family in the periodic table has its own characteristic properties based on the number of

A physical, mental, or visual representation of an idea to help people understand what they cannot observe directly is a

When an atom gains an electron it becomes a negative ion

​Nitrate (NO₃^–), ammonium (NH₄⁺), and carbonate (CO₃^2–) are examples of _________ ions.​

Which particles in an atom are in the nucleus?

How do nuetrons and protons differ?

A chemical bond formed when two atoms share electrons is called a(n)

Which group of elements loses electrons most easily? 

A row across the periodic table is called a

The simplest pure substances that cannot be broken down into any other substances are

​A(n) ____________ is a well-tested idea that explains and connects a wide range of observations.​

When an atom loses an electron, it becomes a

A covalent bond in which electrons are shared unequally is

The valence electrons are those electrons most tightly held by the atom.