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Honors Chemistry Midterm 2024

Honors Chemistry Midterm 2024

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the conversion factor from kilometers to centimeters?

Back

1 km = 100,000 cm, therefore 50 km = 5,000,000 cm.

2.

FLASHCARD QUESTION

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have the same atomic number but different numbers of neutrons.

3.

FLASHCARD QUESTION

Front

How do you calculate the frequency of light given its wavelength?

Back

Use the formula: frequency (ν) = speed of light (c) / wavelength (λ). For yellow light with a wavelength of 645 nm, frequency = 3.00 x 10^8 m/s / 645 x 10^-9 m = 4.65 x 10^14 Hz.

4.

FLASHCARD QUESTION

Front

Convert 0.000240 to scientific notation.

Back

2.40 x 10^{-4} with 3 significant figures.

5.

FLASHCARD QUESTION

Front

What are valence electrons?

Back

Valence electrons are the electrons in the highest s and p orbitals of an atom, which determine its chemical properties.

6.

FLASHCARD QUESTION

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.00 x 10^8 m/s.

7.

FLASHCARD QUESTION

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

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