Unit 1 Performance Task Review

An ionic bond

• forms when a non metal transfers an electron to a metal

• forms when a metal transfers an electron to a nonmetal

• forms when non metals share electrons

• creates a molecule

Match the following

• Ionic Bond

• forms a crystal

• Electronegativity difference of a Non Polar Covalent Bond

• 1.7 or higher

• Covalent Bond

• 0.5-1.7

• Electronegativity of an Ionic Bond

• 0-0.5

• Electronegativity Difference of a Polar Covalent Bond

• forms a molecule

Tags

NGSS.MS-PS1-1

Chlorine has (a)   valence electrons

Rank the following from lowest to highest electronegativity

• S

• Cl

• Mg

• Si

• P

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Match the following

• electrons flow throughout because they are not attached to the cations

• non polar covalent bond

• cation and anion separate and allow charge to flow

• metallic bond

• the positive and negative side of this molecule attach to water and dissolve

• ionic bond

• this substance has a low melting point and does not dissolve

• polar covalent bond

Tags

NGSS.HS-PS1-1

Why is carbon able to form large bio molecules?

• It has 4 valence electrons and form 4 covalent bonds

• It has 5 valence electrons and can form 5 covalent bonds

• It has 3 valence electrons and can form 3 covalent bonds

• It has 6 valence electrons and can form 6 covalent bonds

Tags

NGSS.MS-PS1-1

NGSS.MS-LS1-7

Match the following

• hydrogen (H) & oxygen (O)

• ionic bond

• chlorine (Cl) and chlorine (Cl)

• non polar covalent bond

• sodium (Na)& chlorine (Cl)

• polar covalent bond

Tags

NGSS.HS-PS1-1

Which elements are in ALL Macromolecules (Molecules of Life)

• C,H,O

• C,H,O,P,N,S

• Na+, Cl-

• water

Tags

NGSS.HS-LS1-6

Water dissolves other substances because

• water is polar

• water has a covalent bond

• water contains H and O

• water moderates temperature

All Halogens (Cl, I, Br, F) have the same number of

• valence electrons

• protons

• neutrons

• atoms