SCIENCE SECOND QUARTER

Best describes bohr’s atomic model 

  • Electrons occupy orbits, whose energy increases with increasing distance from the nucleus

What's common between bohr’s model and the quantum mechanical model

  • Electrons have a discrete amount of energy

Valence electrons

  • The electrons in the outermost energy level of an atom

Why do most atoms bond with other atoms

  • To attain stability

When is an anion formed

  • When a neutral atom gains electrons

Which pair of elements can form ionic bonds

  • Metal and non metal

Which pair of elements can form covalent bonds

  • Two non metals

What type of bond is formed when two atoms share electrons equally

  • Non polar covalent bond

What type of bond is formed when atoms transfer electrons

  • Ionic bond

Which of the following does not correctly describe metals

  • Low melting and boiling points


Which of the following is an organic compound

  • Ethyne

Carbon is capable of bonding with a maximum of _____ atoms to form compounds

  • 4

Hydrocarbons that contain at least one double bond and no triple bonds are classified as

  • Alkenes

A compound whose general formula is R - COOH is classified as a

  • Carboxylic - acid

Carbon compounds with the general formula CnH2n+2 are called

  • Alkanes

Alkenes and alkynes are best described as _______ hydrocarbons

  • Unsaturated

These compounds are commonly used as fuels 

  • Hydrocarbons

This type of compound is responsible for many of the pleasant smells of fruits

  • Esters

Which of the following is responsible for the characteristics properties of hydrocarbon derivatives

  • Functional group

Which type of compound contains nitrogen 

  • Amines

What type of hydrocarbon is the given chemical formula HC=C-CH2CH3

  • alkene

Which pair of compounds contain the carbonyl group

  • Aldehydes and ketones


How many atoms are there in 1 mole of an element 

  • 6.002x10^23

What is the mass of 1 mole of silver

  • 107.9 g

The molar mass of an element is numerically equal to its

  • Atomic mass

Which shows the smallest whole-number ratio of the atoms in a particle unit of a compound

  • Empirical formula

Which statement is correct about diatomic oxygen and carbon dioxide

  • Weigh the same

Suggested that atoms can be counted

  • Amadeo Avogadro

One mole of a substance

  • Molar Mass

Unit used for molar mass

  • g/mol

Known for inventing devices that  detect and quantify substances

  • Dr. Fortunato Sevilla 3