Chemical Bonds Quick Check 1

A ​ (a)   formula shows what ​ (b)   a compound contains and the exact number of the atoms in a unit of that compound.

• chemical
• elements
• element symbol
• atomic
• neutral

Tags

NGSS.MS-PS1-1

In the element, H₂SO₄ match the element to the correct quantity of it present in the compund.

• 1

• Sulfur

• 4

• Hydorgen

• 2

• Oxygen

Tags

NGSS.MS-PS1-1

Which of the following elements is the most stable?

• Lithium

• Carbon

• Neon

Atoms with unstable outer energy levels can lose, ​ (a)   , or share ​ (b)   to obtain a ​ (c)   outer energy level.

• gain
• electrons
• stable
• shimmy
• protons
• unstable

Calcium has ​​ (a)   total electrons and ​ (b)   ​ (c)   electrons. In a chemical bond, for Calcium to become stable, it will more than likely ​ (d)   the two electrons the inner energy level will be full.

• twenty
• two
• valence
• lose
• forty
• gain
• grounded

Which of the following best describes a chemical bond?

• It is the force that holds atoms together in a compound.

• It shows what elements a compound contains and its exact ratios.

• It shows only the element symbol and the element's valence electrons.

Look closely at the elements listed. Categorize them based on HOW they will gain stability (in terms of electron movement) in a chemical bond.

Groups:

(a) Gain Electron(s)

,

(b) Lose Electron(s)

• Oxygen

• Fluorine

• Berylium

• Sodium

The ​ (a)   number of a periodic table tells you about the number of ​ (b)   electrons.

• group
• valence
• period
• inner

In a chemical bond between sodium and chlorine to make sodium chloride, ​ (a)   will lose ​ (b)   electron and ​ (c)   will gain one electron to form a chemical bond to reach stability.

• sodium
• one
• chlorine
• two
• oxygen

Which of the following will Lithium NOT likely bond with to reach stability? Hint: you might have to draw out the electron dot diagrams and consider the octet rule.

• Sodium

• Chlorine

• Bromine

• Fluorine