Unit 3b

What two types of atoms make a covalent bond?

• 2 Nonmetals

• 1 Nonmetal and 1 Metal

• 2 Metals

• 2 Noble Gases

Tags

NGSS.MS-PS1-1

When dissolved in water, the solution is a good conductor of electricity.

• ionic compounds

• covalent compounds

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NGSS.HS-PS1-3

The following properties are all characteristics of ionic compounds EXCEPT

• high melting and boiling points

• soft

• crystal lattice structure

• conduct electricity when dissolved in water

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Which of the following is true for BOTH ionic and covalent compounds?

• They bond to attain a noble gas configuration

• During bonding, atoms will increase in mass.

• They either transfer or share protons to get the atomic number of a noble gas.

• They always act like the noble gas that comes before them.

Low melting point and low solubility in water are general properties of ______________________ compounds

• ionic

• covalent

• chemical

• glucose

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How many Oxygen atoms are in Al₂(SO₄)₃?

• 4

• 12

• 7

• 24

Tags

NGSS.MS-PS1-1

A subscript is the small number below the element symbol that tells the number of _______ of that element.

• atoms

• valence electrons

• protons

• elements

Tags

NGSS.MS-PS1-1

What does 12.011 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

How do you calculate the number of neutrons? *

• Mass = Atomic number - Neutrons

• Mass - Atomic number = Neutrons

• Atomic number = Neutrons

Nonmetals (select all that apply)

• are found on the right side of the periodic table.

• are found on the left side of the periodic table.

• are good conductors of heat and electricity.

• are brittle.

• can be solid, liquids, or gases at room temperature.