Physical Science: 1st Semester Test Review_2024-25

Front

The most common state of matter in the universe is _______.

Back

plasma

Front

Which of the following is evidence that a physical change has occurred? Formation of a solid precipitate, Rust, Broken glass, Bubbles

Back

Formation of a solid precipitate

Front

Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a _______.

Back

gas

Front

Which of the following is the reason why atoms of sodium and chlorine attract each other in a salt crystal?

Back

Sodium has a positive charge and chlorine has a negative charge.

Front

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

Back

8

Front

Which part of the periodic table indicates the number of energy levels in the electron cloud? Options: Period, Family, Valence electrons, Group

Back

Period

Front

Which of the following elements would be the least reactive? Iodine, Silicon, Argon, Silver

Back

Argon

Front

Which of the following elements would be the most reactive? Argon, Iodine, Silicon, Potassium

Back

Potassium

Front

Mrs. James blends lemons, sugar, and water in a pitcher. She has made a _______.

Back

homogeneous mixture

Front

A flask containing molecules of gas A and a separate flask containing molecules of gas B are both at the same temperature. Gases A and B must have equal _______.

Back

pressures