Question

atoms, elements and isotopes note sheet

elements

• ______ that cannot be broken down chemically
• each element unique chemical symbol
• consists of ______ letters
• ____ letter is ____ capitalized
• ____ letter is always ____

image of element box (h) with four arrows pointing to 1, h, hydrogen, 1.008, each with a blank line
atoms

• the simplest particle of an element that ______ all the properties of that element
• properties of atoms determine the structure and properties of the ______ they compose

the nucleus

• ______ core
• contains the nucleons, the ____ charged ____ and

____ ____

• positively charged
• contains most of the ______ of the atom

Explanation:

Elements Section

• First blank: Pure substances (Elements are pure substances that can't be broken down chemically into simpler substances).
• "Consists of ______ letters": 1 or 2 (Chemical symbols are 1 or 2 letters, e.g., H (1), He (2)).
• "____ letter is ____ capitalized": First; always (The first letter of a chemical symbol is always capitalized, e.g., Na, O).
• "____ letter is always ____": Second; lowercase (If there's a second letter, it's lowercase, e.g., Mg, Cl).

Periodic Table Box (Hydrogen)

• Top number (1): Atomic number (Represents the number of protons).
• Letter (H): Chemical symbol (Represents the element).
• "Hydrogen": Element name (The full name of the element).
• Bottom number (1.008): Atomic mass (Average mass of the element’s isotopes).

Atoms Section

• "The simplest particle of an element that ______ all the properties of that element": Retains (Atoms are the smallest unit of an element that has the element’s properties).
• "Properties of atoms determine the structure and properties of the ______ they compose": Substances (Atoms combine to form substances, and their properties determine the substance’s properties).

The Nucleus Section

• "______ core": Dense central (The nucleus is the dense central core of an atom).
• "Contains the nucleons, the ____ charged __ and __ ____": Positively; protons; neutral; neutrons (Nucleons are protons (positive) and neutrons (neutral)).
• "Contains most of the ______ of the atom": Mass (The nucleus has most of the atom’s mass, as electrons have negligible mass).

Final Filled Notes (Key Blanks Answered)

Elements

• [Pure substances] that cannot be broken down chemically
• Each element has a unique chemical symbol
• Consists of [1 or 2] letters
• [First] letter is [always] capitalized
• [Second] letter is always [lowercase]

Periodic Table Box (Hydrogen)

• 1 ← [Atomic number]
• H ← [Chemical symbol]
• Hydrogen ← [Element name]
• 1.008 ← [Atomic mass]

Atoms

• The simplest particle of an element that [retains] all the properties of that element
• Properties of atoms determine the structure and properties of the [substances] they compose

The Nucleus

• [Dense central] core
• Contains the nucleons, the [positively] charged [protons] and [neutral] [neutrons]
• Positively charged
• Contains most of the [mass] of the atom

Answer:

Elements Section

• First blank: Pure substances (Elements are pure substances that can't be broken down chemically into simpler substances).
• "Consists of ______ letters": 1 or 2 (Chemical symbols are 1 or 2 letters, e.g., H (1), He (2)).
• "____ letter is ____ capitalized": First; always (The first letter of a chemical symbol is always capitalized, e.g., Na, O).
• "____ letter is always ____": Second; lowercase (If there's a second letter, it's lowercase, e.g., Mg, Cl).

Periodic Table Box (Hydrogen)

• Top number (1): Atomic number (Represents the number of protons).
• Letter (H): Chemical symbol (Represents the element).
• "Hydrogen": Element name (The full name of the element).
• Bottom number (1.008): Atomic mass (Average mass of the element’s isotopes).

Atoms Section

• "The simplest particle of an element that ______ all the properties of that element": Retains (Atoms are the smallest unit of an element that has the element’s properties).
• "Properties of atoms determine the structure and properties of the ______ they compose": Substances (Atoms combine to form substances, and their properties determine the substance’s properties).

The Nucleus Section

• "______ core": Dense central (The nucleus is the dense central core of an atom).
• "Contains the nucleons, the ____ charged __ and __ ____": Positively; protons; neutral; neutrons (Nucleons are protons (positive) and neutrons (neutral)).
• "Contains most of the ______ of the atom": Mass (The nucleus has most of the atom’s mass, as electrons have negligible mass).

Final Filled Notes (Key Blanks Answered)

Elements

• [Pure substances] that cannot be broken down chemically
• Each element has a unique chemical symbol
• Consists of [1 or 2] letters
• [First] letter is [always] capitalized
• [Second] letter is always [lowercase]

Periodic Table Box (Hydrogen)

• 1 ← [Atomic number]
• H ← [Chemical symbol]
• Hydrogen ← [Element name]
• 1.008 ← [Atomic mass]

Atoms

• The simplest particle of an element that [retains] all the properties of that element
• Properties of atoms determine the structure and properties of the [substances] they compose

The Nucleus

• [Dense central] core
• Contains the nucleons, the [positively] charged [protons] and [neutral] [neutrons]
• Positively charged
• Contains most of the [mass] of the atom