Chemistry exam

Lab Safety: Approved eye protection devices (such as goggles) are worn in the laboratory...

• any time chemicals, heat, or glassware are used

• only if you don't have corrective glasses

• to improve your vision

• to avoid eye strain

Lab Safety: The following footwear is the best in the laboratory...

• sandals

• closed-toe shoes

• weather-appropriate shoes

• dangling jewelry

Matter: Length is a

• phosphorus

• chemical

• physical

• sulfur

Tags

CH.PS1.1

CH.PS1.3

Matter: Saltwater is a

• homogeneous

• heterogeneous

• physical

• chemical

Tags

CH.PS1.3

CH.PS1.2

CH.PS1.1

CH.PS1.1

Matter: A rotting banana is an example of a

• physical

• chemical

• heterogeneous

• homogeneous

Tags

CH.PS1.1

CH.PS1.1

Matter: Trail mix is a

• physical

• heterogeneous

• homogeneous

• chemical

Tags

CH.PS1.2

CH.PS1.1

CH.PS1.1

Atomic Structure: How many protons does the element Mo have?

Element symbol: Mo

Atomic number

Mass number: 99

# of protons

# of neutrons

# of electrons

• 6

• 45

• 57

• 95

Tags

CH.PS2.6

Atomic Structure: How many electrons does the element Mo have?

Element symbol: Mo

Atomic number

Mass number: 99

# of protons

# of neutrons

# of electrons

• 95

• 57

• 6

• 42

Tags

CH.PS2.6

Atomic Structure: How many neutrons does the element Mo have?

Element symbol: Mo

Atomic number: 99

Mass number

# of protons

# of neutrons

# of electrons

• 95

• 57

• 42

• 6

Tags

CH.PS2.6

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p³ is the electron configuration for…

• Oxygen (O)
• Sulfur (S)
• Nitrogen (N)
• Phosphorus (P)

Tags

CH.PS2.6