아카데믹 IELTS(밴드 5 이하) - Chemistry

(science) the smallest part of a chemical element that is found in the nature

원자

the smallest structure of a substance consisting of a group of atoms

분자

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

원소

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

이온

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

반응

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

혼합물

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

산

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

염기

the state of a substance that is neither solid nor liquid

가스

a substance such as water that flows freely, unlike a gas or a solid

액체

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

고체

to make something change from a particular state, condition or position to another

전환하다

a quantitive mesasure used for determining how acidic or alkanic something is on a scale of 0 to 14

pH