TEKS 8.5ABC Pre-Test

TEKS 8.5ABC Pre-Test

Assessment

Flashcard

Science, Chemistry

8th 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 charge of the nucleus of an atom?

Back

The nucleus of an atom has a positive charge due to the presence of protons.

2.

FLASHCARD QUESTION

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that determine its chemical properties.

3.

FLASHCARD QUESTION

Front

Which element has two valence electrons?

Back

Magnesium (Mg) has two valence electrons.

4.

FLASHCARD QUESTION

Front

What is the definition of malleability in metals?

Back

Malleability is the ability of a metal to be shaped or bent without breaking.

5.

FLASHCARD QUESTION

Front

Which group of elements are known to be malleable, conduct electricity, and are lustrous?

Back

Copper (Cu), Sodium (Na), and Magnesium (Mg) are malleable, conduct electricity, and are lustrous.

6.

FLASHCARD QUESTION

Front

What particles are found in the nucleus of an atom?

Back

The nucleus contains positively charged protons and neutral neutrons.

7.

FLASHCARD QUESTION

Front

How many protons does an atom with a +25 charge in its nucleus have?

Back

An atom with a +25 charge in its nucleus has 25 protons.

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