Atomic Structure and Bonds Quiz

The number of protons in an atom determines the element's identity.

The charge of an atom's net charge is determined by electrons.

A neutron's mass is approximately equal to that of a proton.

The periodic table primarily conveys the atomic number of elements.

The mass number appears as a decimal because it represents the average mass of isotopes.

Protons contribute to the stability of an atom's nucleus.

Isotopes are defined by having the same number of protons and different numbers of neutrons.

All isotopes of Carbon contain 6 protons.

The chemical formula for methane gas is CH₄.

In methane, each carbon and hydrogen atom shares one pair of electrons.

In methane, the ratio of hydrogen to carbon is 4:1.

The bond formed between hydrogen and carbon in methane is a covalent bond.

A covalent bond is visually represented by a straight line.

There are four hydrogen atoms bonded to the central carbon atom in a methane molecule.

In methane, carbon shares one pair of electrons with each hydrogen atom.

The overall molecular structure of methane is tetrahedral.

Elements are substances made up of only one type of atom.

John Dalton's primary contribution was the idea that atoms are indivisible and indestructible.

Ernest Rutherford discovered that atoms contain a dense, positively charged nucleus.

Niels Bohr refined Rutherford's model by explaining that electrons orbit in fixed paths around the nucleus.

Protons are positively charged particles found in the nucleus of an atom.

Electrons have a negative charge and are much lighter than protons.

The type of atom is determined by the number of protons in the nucleus.

The plum pudding model describes an atom with electrons embedded in a positively charged 'pudding'.

In a neutral chlorine atom, the arrangement of electrons is 2, 8, 7.

Two chlorine atoms form a covalent bond by sharing electrons to fill their outer shells.

The chemical formula for chlorine gas is Cl₂.

A neutral oxygen atom has 6 valence electrons.

The bond formed between two oxygen atoms is a double covalent bond.

The arrangement of electrons in a neutral carbon atom is 2, 4.

Double covalent bonds are represented in chemical formulas by two straight lines.

In a covalent bond, atoms share electrons to achieve a full outer shell.

A carbon atom needs 4 additional electrons to achieve a full outer shell.

When atoms form a covalent bond, they achieve a full outer shell.

Cl₂ is an example of a molecule with a single covalent bond.

A neutral molecule of oxygen gas (O₂) contains a total of 12 electrons.

A hydrogen atom needs two electrons to achieve a full first shell.

Methane (CH₄) contains single covalent bonds.