Chemistry S1 Review (without electron configurations)

Chemistry S1 Review (without electron configurations)

Assessment

Flashcard

Chemistry

10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

How many neutrons does sodium-23 have?

Back

12

2.

FLASHCARD QUESTION

Front

In order for an atom to be neutral, what must be true?

Back

The atom has the same number of protons and electrons.

3.

FLASHCARD QUESTION

Front

A neutral atom would become an ion that has a charge of 2+ by:

Back

Losing two electrons.

4.

FLASHCARD QUESTION

Front

Round 1289 to three significant figures.

Back

1.29x10^3

5.

FLASHCARD QUESTION

Front

Which of the following statements is true regarding the particle structure of liquids? Particles of a liquid are:

Back

Relatively close together, so they cannot be easily compressed.

6.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

7.

FLASHCARD QUESTION

Front

Define mass number.

Back

The total number of protons and neutrons in an atom's nucleus.

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