Похожие презентации:
Chemistry
1.
Baykalov Andrey 3 course2. vocabulary
VOCABULARYchemistry – химия
branch – отрасль
science – наука
substance – вещество
research – исследование
properties – свойства
reaction – реакция
signs – признаки
distinguish – выделить
amount – количество
flammability – воспламеняемость
rusting – ржаветь
elements – элементы
3.
Chemistry is the branch ofscience concerned with the
substances of which matter is
composed, the research of their
properties and reactions, and the use
of such reactions to form new
substances.
4.
A substance is matter whichhas a specific composition and
specific properties.
5.
Properties are signs that distinguishcertain substances from others