Ocean Chemistry

Which Universal Indicator colour would be shown in a weak (dilute) acid?

• red

• yellow

• green

• blue

What would happen to blue litmus paper in a base?

• It would turn red

• It would turn purple

• It would stay blue

• It would stay red

Which pH would give a Universal Indicator colour of green?

• 3

• 5

• 7

• 9

Which pH would give a Universal Indicator colour of purple?

• 4

• 7

• 10

• 14

How many protons does argon have?

• 18

• 39.9

• 40

• 22

Tags

NGSS.MS-PS1-1

How many electrons does argon have?

• 18

• 39.9

• 40

• 22

Tags

NGSS.MS-PS1-1

How many neutrons does argon have?

• 18

• 39.9

• 40

• 22

Tags

NGSS.MS-PS1-1

What is the electron arrangement of argon?

• 2,8,8,8,8,6

• 4,6,8

• 2,8,8

• 8,8,2

Tags

NGSS.MS-PS1-1

Do you think argon forms ions?

• yes, because it needs to lose electrons

• yes, because it needs to gain electrons

• no, because it has a full outer valence shell

• no, because it doesn't make an ion

Tags

NGSS.MS-PS1-1

An element has an electron arrangement of 2,8,3. How will it form an ion?

• Lose 3 electrons

• Gain 3 electrons

• Lose 8 electrons

• Gain 5 electrons