10th Grade Chemistry

Which of the following is an example of an acid-base reaction?

• Reaction between HCl and NaOH

• Reaction between H2SO4 and NaOH

• Reaction between NaCl and H2O

• Reaction between HCl and H2O

What is the balanced equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)?

• HCl + NaOH -> NaCl + H3O

• HCl + NaOH -> NaCl + H2O

• HCl + NaOH -> Na2Cl + H2O

• HCl + NaOH -> HClO + NaOH

Tags

NGSS.HS-PS1-7

In a stoichiometric calculation, what is the mole ratio used for?

• To measure the volume of the reactants

• To calculate the temperature of the reaction

• To convert between the amounts in moles of any two substances involved in a chemical reaction.

• To determine the color of the products

Tags

NGSS.HS-PS1-7

What is the molar mass of water (H2O)?

• 20.008

• 16.043

• 18.015

• 22.010

Which of the following is an example of an ionic bond?

• Hydrogen gas (H2)

• Oxygen gas (O2)

• Carbon dioxide (CO2)

• Sodium chloride (NaCl)

Tags

NGSS.HS-PS1-3

What is the electron configuration of oxygen (O)?

• 1s2 2s2 2p4

• 1s2 2s2 2p3

• 1s2 2s2 2p2

• 1s2 2s2 2p6

Tags

NGSS.HS-PS1-1

Which of the following elements has the highest electronegativity?

• Fluorine

• Oxygen

• Sodium

• Carbon

Tags

NGSS.HS-PS1-2

What is the trend for atomic radius across a period in the periodic table?

• Decreases

• Increases

• Fluctuates

• Remains constant

Which of the following elements has the highest ionization energy?

• nitrogen

• hydrogen

• oxygen

• helium

Tags

NGSS.HS-PS1-1

What is the trend for electronegativity down a group in the periodic table?

• increases

• fluctuates

• remains constant

• decreases