General Science Principles Flashcards
7 cards from real OTEE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 General Science Principles flashcards as text
On the periodic table, elements in the same vertical column (group) share which characteristic?
Answer: The same number of valence electrons
Elements in the same group have the same number of valence electrons, giving them similar chemical properties.
In an ionic bond, what happens to electrons?
Answer: One atom transfers electrons to another
In ionic bonding, one atom donates electrons to another, creating oppositely charged ions that attract each other.
A solution with a pH of 3 is best described as:
Answer: Strongly acidic
pH values below 7 indicate acidic solutions; pH 3 is strongly acidic because each unit below 7 represents a tenfold increase in acidity.
In a chemical reaction, the Law of Conservation of Mass requires that:
Answer: Total mass of reactants equals total mass of products
The Law of Conservation of Mass states that matter is neither created nor destroyed, so reactant mass equals product mass.
Which state of matter has a definite volume but no definite shape?
Answer: Liquid
Liquids have a fixed volume but take the shape of their container because their particles can flow past one another.
Which subatomic particle determines the atomic number of an element?
Answer: Proton
The atomic number equals the number of protons in the nucleus, which uniquely identifies each element.
Adding a solute to a pure solvent will:
Answer: Raise its boiling point and lower its freezing point
Dissolved solutes cause boiling point elevation and freezing point depression, both colligative properties of solutions.