chemistry midterm 2

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Tags

NGSS.MS-PS2-3

Cations are...

• Positive
• Negative
• Neutral
• Purring

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

 Identify the smallest value.

• 2.3 × 10^7

• 2.3 × 10^-1

• 2.3 × 10^5

• 2.3 × 10^-7

If I gain electrons I become

• Positive because I've added to my atom
• negative because I've added electrons
• same because i'm balanced
• equal because now I have electrons

Tags

NGSS.MS-PS2-3

How many protons does gold have?

• 79

• 196

• 39.5

• 30

Tags

NGSS.MS-PS1-1

How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷

What is the name of CuCl₃?

• Copper (III) Chloride

• Copper (II) Chloride

• Copper Chloride

The configuration for the outermost energy level in Ca is

• 3s2

• 2s1

• 4s2

• 4s1

Tags

NGSS.HS-PS1-1

What element is represented in this Bohr Model? 

• Carbon
• Hydrogen
• Aluminum
• Lithium

Tags

NGSS.MS-PS1-1