PBA 2

The total resistance of this circuit is

• 1.05 Ω

• 11.0 Ω

• 2.05 Ω

• 3.67 Ω

Which of the following could be used as the core of a simple electromagnet?

• drinking straw

• iron nail 

• a soda bottle

• an ink pen

How are electromagnets different from magnets?

• Electromagnet is bigger than magnet

• Electromagnet can be turned on and off

• Electromagnet does not have magnetic force

• Electromagnet does not have a North and South pole

Tags

NGSS.MS-PS2-3

Based on the diagram, which is the North pole for the electromagnet?

• X

• Y

• W

• V

Which of the following statements are true of ALL ions? Check all that apply.

• Ions have a different number of neutrons and protons

• Ions have a positive or negative charge

• Ions have a different number of electrons and protons

• Ions have a neutral charge

Tags

NGSS.MS-PS2-3

What is a cation?

• A negatively charged atom

• A positively charged atom

• A neutrally charged atom

• An atom in a chemical bond

What are valence electrons?

• The innermost electrons of an atom

• All the electrons of an atom

• The outermost electrons of an atom

• The innermost protons of an atom

Tags

NGSS.MS-PS1-1

What's the goal of all atoms?

• To find an atom to bond with

• To become an ion

• To have a complete outer shell

• To have the same number of electrons and protons

Tags

NGSS.MS-PS1-1

What is the primary function of PBA 2 in scientific research?

• Data analysis

• Sample preparation

• Hypothesis testing

• Result validation

Tags

NGSS.MS-LS1-5

In the context of PBA 2, which of the following is most likely a component of its process?

• Centrifugation

• Spectroscopy

• Chromatography

• Electrophoresis