CrossChemACP2024FinalReview

CrossChemACP2024FinalReview

Assessment

Flashcard

Chemistry

10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with new chemical properties. Example: Burning a candle.

2.

FLASHCARD QUESTION

Front

What is the electron geometry of PH3?

Back

The electron geometry of PH3 is tetrahedral.

3.

FLASHCARD QUESTION

Front

What sublevel fills after 4f?

Back

The 5d sublevel fills after 4f.

4.

FLASHCARD QUESTION

Front

Which bond is least polar: H-F, H-S, H-N, or H-C?

Back

The bond H-C is the least polar.

5.

FLASHCARD QUESTION

Front

Which element has the smallest atomic radius: Rb, As, Li, or O?

Back

O (Oxygen) has the smallest atomic radius.

6.

FLASHCARD QUESTION

Front

Define electron geometry.

Back

Electron geometry refers to the spatial arrangement of all electron groups (bonding and lone pairs) around a central atom.

7.

FLASHCARD QUESTION

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition (e.g., melting ice), while a chemical change results in the formation of new substances (e.g., rusting iron).

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