Parts of the plant

Parts of the plant

คำแนะนำของผู้เขียน

Parts of the plant

สำรวจแผ่นงาน

Formulación ÓXIDOS

Chemistry - Science

FORMULACIÓN ÓXIDOS

Tabla periódica

Chemistry - Science

Nombra elementos y pon símbolos

Formulación HIDRUROS

Chemistry - Science

Formulación inorgánica

Metals and Alloys

Chemistry - Science

Seven pictures of metals and alloys in typical applications. Six pictures have drop-down answers: the seventh is free-text (extension question). All photographs (c) Jon Tarrant.