Regents Chemistry June 2016

Which statement describes the charge of an electron and the charge of a proton?

•  An electron and a proton both have a charge of 1. 
•  An electron and a proton both have a charge of 1. 
• An electron has a charge of 1, and a proton has a charge of 1. 
• An electron has a charge of 1, and a proton has a charge of 1. 

Which subatomic particles are found in the nucleus of an atom of beryllium?  

• electrons and protons 
• electrons and positrons
• neutrons and protons 
• neutrons and electrons

The elements in Period 4 on the Periodic Table are arranged in order of increasing 

• atomic radius
• atomic number
• number of valence electrons
• number of occupied shells of electrons

Which phrase describes two forms of solid carbon, diamond and graphite, at STP? 

• the same crystal structure and the same properties
• the same crystal structure and different properties
• different crystal structures and the same properties
• different crystal structures and different properties

Which element has six valence electrons in each of its atoms in the ground state?

• Se
• As
• Kr
• Ga

What is the chemical name for H₂SO₃(aq)?

• sulfuric acid
• sulfurous acid
• hydrosulfuric acid
• hydrosulfurous acid

Which substance is most soluble in water? (1)  (3)  (2)  (4) 

• (NH₄)₃PO₄
• Cu(OH)₂
• Ag₂SO₄
• CaCO₃

Which type of bonding is present in a sample of an element that is malleable? (1)  (3)  (2)  (4) 

• ionic
• metallic
• nonpolar covalent
• polar covalent

Which atom has the greatest attraction for the electrons in a chemical bond?

• hydrogen
• oxygen
• silicon
• sulfur

Which type of reaction involves the transfer of electrons?

• alpha decay
• double replacement
• neutralization
• oxidation-reduction