Which of the following is not a physical property

• size

• melting and boiling point

• density and hardness

• reactivity in water

Which of the following is a chemical property of acids

• density

• sour taste

• reacts with carbonates

• malleability

Tags

NGSS.HS-PS1-2

Which of the following would be insoluble in water?

• Ca(C₂H₃O₂)₂

• Mg(OH)₂

• BeSO₄

• Ba(OH)₂

Tags

NGSS.HS-PS1-3

Which of the following products would likely form a precipitate?

• CuS

• LiNO₃

• NaC₂H₃O₂

• KBr

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following would be expected to form positive ions when it reacts

• Ag

• Cl

• S

• O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following would be expected to form anions when it reacts?

• Cl

• Ti

• Mn

• Na

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-2

How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

The total number of valence electrons in a carbonate (CO₃^-2) ion is

• 22

• 24

• 30

• 32

Tags

NGSS.HS-PS1-1

The total number of valence electrons in an ion of ammonium (NH₄⁺) is _____

• 7

• 8

• 9

• 12

Tags

NGSS.HS-PS1-1