Chemistry Semester 1 Review

Front

What is an isotope?

Back

A variation of atoms of the same element.

Front

What are the products for the reaction between F2 + 2 KCl -> ?

Back

2 HF + Cl2.

Front

What characterizes a gas?

Back

A gas has fast-moving particles.

Front

What is an anion?

Back

An anion is a negatively charged ion.

Front

What is the chemical name for Na2CO3 · 10H2O?

Back

Sodium sulfate decahydrate.

Front

What is the definition of a noble gas?

Back

Noble gases are elements in group 18 of the periodic table that are mostly unreactive due to having a full valence shell.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.