Chemistry Review GP4

What is the name for this acid H₂SO₄

• hydrochloric acid

• phosphorus acid

• sulfuric acid

• nitric acid

Lewis dots structure of NaCl shows that

• 1 valence electron of Na is lost

• 1 valence electron is gained by Cl

• Cl has 8 electrons & Na shows none

• All of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In Rutherford's gold foil experiment, few alpha particles were bounced back while most went through

• indicates empty space in the atom

• indicates a dense positive core

• both of the above

• none of the above

2 Mg(s) + O₂(g) ---> 2 MgO(s)

During a chemical reaction, bright light is given off and the reaction container becomes warm. How does the chemical energy of the product compare to the total chemical energy of the reactant?

• energy of the product is less than reactants

• energy of the product is more than the reactants

• energy of the reactants is the same as the product

• The relative chemical energies of the reactants and products cannot be determined from the information given.

Tags

NGSS.HS-PS1-4

2Na + 2H₂O --> 2NaOH + H₂

How many Liters of H₂ are produced from 23g of Na?

• 5.6 L

• 11.2 L

• 22.4 L

• 44.8 L

Tags

NGSS.HS-PS1-7

The electronegativity of bromine is ____ than Chlorine because of ____.

• larger, more energy levels

• larger, less energy levels

• smaller, more energy levels

• smaller, less energy levels

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many atoms are present in a 120.g piece of solid calcium?

• 3.02 x 10²³ atoms Ca

• 6.02 x 10²³ atoms Ca

• 1.80 x 10²⁴ atoms Ca

• 2.40 x 10²⁴ atoms Ca

What is the molecular geometry of H₂O?

• Bent

• Linear

• Trigonal Planar

• Trigonal Bipyrimidal

This Lewis dot indicates which of the following electronic configuration

• p³

• d⁶

• s²p³

• s²d⁶

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

CH₄ + 2O₂--> CO₂+ 2H₂O

If 16g of CH₄ react with 64g of O₂ then ....

• 1g of CO₂ and 2g of H₂O are produced

• 22g of CO₂ and 18g of H₂O are produced

• 44g of CO₂ and 36g of H₂O are produced

• none of the above

Tags

NGSS.HS-PS1-7