Modeling Atoms Quiz Review

The image shows a model of a boron atom. How many neutrons are in this boron atom?

Tags

NGSS.MS-PS1-1

How many electrons does one neutrally charged atom of neon have?

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NGSS.HS-PS1-1

How many neutrons are there in ¹³⁸Ba?

Which of the following represents a pair of isotopes?

• 1. Mg⁺², Ca⁺²

• 1. ¹⁴N, ¹⁵N

• 1. Co⁺², Co⁺³

• 1. ⁷N, ⁶C

Tags

NGSS.HS-PS1-8

Silicon is the second most abundant element in Earth’s crust. It is used in the electronics industry to manufacture transistors, and in the construction industry to produce concrete and Portland cement. The graph shows the relative abundances of the naturally occurring silicon isotopes.

What could be the estimated atomic mass of Silicon?

• 26.2 amu

• 28.1 amu

• 29.8 amu

• 30.1 amu

Which of the following pairs does not represent isotopes?

• 1. ¹²C, ¹³C

• 1. ¹⁶O, ¹⁸O

• 1. ¹H, ²H

• 1. ¹⁴N, ¹⁴C

Tags

NGSS.HS-PS1-8

Iron is one of the most abundant elements in Earth’s crust. It is used in the construction industry to manufacture steel, and in the automotive industry to produce car bodies. The graph shows the relative abundances of the naturally occurring iron isotopes.

What could be the estimated atomic mass of Iron?

• 55.8 amu

• 56.2 amu

• 57.9 amu

• 58.3 amu

Tags

NGSS.HS-PS1-8

NGSS.HS-PS1-7