Mi-Star

A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?

• The number of neutrons

• The number of protons

• The location of valence electrons

• The number of valence electrons

Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.MS-PS1-1

How do electrons of an element determine that element's reactivity?

• If the valence shell has missing electrons it is very reactive to attract or lose more electrons.

• If the valence shell has a full ring of electrons it is very reactive because it needs more.

• If the valence shell has a full shell of electrons it is very reactive because it is already full.

• If the valence shell has missing electrons it is not reactive because it is missing electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does the atom of Carbon-14, shown above have?

• 14

• 10

• 6

• 4

Tags

NGSS.MS-PS1-1

• 2
• 8
• 3
• 13

Tags

NGSS.MS-PS1-1

• 2
• 6
• 10
• 16

Tags

NGSS.MS-PS1-1

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

• 6
• 7
• 8
• 9

Tags

NGSS.MS-PS1-1

What is the primary focus of the Mi-Star curriculum in science education?

• Integrating science with engineering practices

• Focusing solely on theoretical science concepts

• Emphasizing historical scientific discoveries

• Concentrating on memorization of scientific facts

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Which of the following best describes the approach Mi-Star takes towards teaching science?

• Project-based learning with real-world applications

• Lecture-based learning with a focus on exams

• Textbook-driven learning with minimal experiments

• Online learning with virtual labs only

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4