Unit 4 Final Test

On the periodic chart, whchi atoms becomes a positive ion?

• Metals like Potassium

• Lead

• Nonmetals like oxygen

• chlorine

Dinitrogen trioxide contains ​ (a)   nitrogen atom(s) and ​ (b)   oxygen atom(s).

• 2
• 3
• 1

Tags

NGSS.MS-PS1-1

On the periodic chart, whchi atoms becomes a negative ion?

• Metals like Potassium

• Lead

• Nonmetals like oxygen

• chlorine

A negatively charged Iodine (I) ion would most likely be attracted to which of the following?

• A positivelly charged Lithium ion

• A neutral helium atom

• A negatively charged oxygen ion

• Another negtaively charged iodine ion

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Match the description of bonds to their name:

• Covalent Bonding

• When two metals assicate with each other.

• Metallic Bonding

• When two non-metals share electrons between them

• Ionic Bonding

• An association between a metal that has given up and electron to a non-metal that has accepted that electron

Tags

NGSS.MS-PS1-5

Which of the following explains the role of valence electrons?

• They are the least common type of electrons and give their ion a positive charge

• They are the electrons in an atom that can be used to form bonds.

• They are the electrons that have escaped the nucleus of the atom.

• They are free electrons that are not part of an atom.

Tags

NGSS.MS-PS1-1

Methane has the formula: CH4. In this molecule, Hydrogen (H) has an oxidation number of +1. Methane is overall neutral, so what is the oxidation number of Carbon (C)?

• +4

• 0

• -1

• -4

Tags

NGSS.MS-PS1-1

Which of the following statements describes the noble gases? Choose all that apply.

• They have a full outer shell with 8 valence electrons.

• They form positive ions.

• They react only with metals.

• They are non-reactive.

Tags

NGSS.MS-PS1-1

H₂S is a ​ ​ (a)   , and its name is ​ (b)   . ​

• binary compound
• polyatomic compound
• hydrogen sulfur
• hydrogen sulfide

Tags

NGSS.MS-PS1-1

The names of polyatomic ions have been provided to help you in naming the following compound: Mg(ClO3). The first name of this compound is ______, and the second name of this compound is ________.

• manganese

• magnesium

• chlorate

• chlorite