Chemical Solutions and Reactions

What is the condition of a neutral atom in terms of protons and electrons?

• More protons than electrons

• More electrons than protons

• Equal number of protons and electrons

• No protons or electrons

Which of the following describes a positive ion?

• More electrons than protons

• Equal number of protons and electrons

• More protons than electrons

• No protons or electrons

What is a characteristic of an ionic compound?

• Low melting point

• Poor electrical conductivity

• High melting point

• Non-crystalline structure

How many electrons does a sodium ion (Na+) have?

• 18

• 19

• 20

• 10

What is the net charge of an oxygen ion with 10 electrons?

• +2

• -2

• 0

• +1

What is the chemical formula for potassium bromide?

• KBr

• K₂Br

• KBr₂

• K₂Br₂

What is the chemical formula for beryllium chloride?

• BeCl

• BeCl₂

• Be₂Cl

• Be₂Cl₂

What is the chemical formula for aluminum oxide?

• AlO

• Al₂O₃

• AlO₂

• Al₃O₂

What is the chemical formula for copper (I) sulfide?

• CuS

• Cu₂S

• CuS₂

• Cu₂S₃

What is the chemical formula for tin (IV) chloride?

• SnCl

• SnCl_²

• SnCl₄

• Sn₂Cl₄