Vocabulary for IELTS Academic (Band 5) - Chemistry

the smallest unit of a chemical element that retains the properties of that element

the smallest unit of a substance that can exist independently while retaining its chemical properties

a substance that is composed of only one type of atom, typically characterized by specific physical and chemical properties

a particle with a net electric charge due to loss or gain of one or more electrons

(chemistry) a process in which several chemicals combine and form different substances

(chemistry) a combination of two or more substances without forming a chemical bond or any chemical reaction

a water-soluble chemical substance that contains Hydrogen and has a sour taste or corrosive feature with a PH less than 7

(chemistry) a substance that can accept protons, donate electrons, or release hydroxide ions in aqueous solution

the state of a substance that is neither solid nor liquid

a substance that flows freely and has a fixed volume but no fixed shape

a substance that is firm and has a certain shape, not like gas or liquid

to cause something to change or move from one state, condition, system, or position to another

a numerical measure of how acidic or basic a solution is, based on hydrogen-ion activity