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2) atoms of same element are identical, but differ from other elements. 3) elements can mix together 4) atoms only change when mixed with other elements. The distance between crests of waves, such as those of the electromagnetic spectrum. Exam Review Learn with flashcards, games, and more — for free.
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Chemistry TOPIC 1 Answers to Student Book 1 questions Atomic structure and the Periodic Table 2 (a) Group 3 (1). There is a very large increase between the third and fourth ionisation energies indicating that a boron atom as three electrons in its outermost quantum shell (1). (b) B (1). (c) The first electron removed is from a 2p orbital.
Chemistry in Context for Cambridge International AS & A Level 7th Edition; AS Level revision; AS Level exam preparation; AS Level multiple choice test; A2 Level revision; A2 Level exam preparation; Answers to in-chapter questions; Answers to end of chapter questions
Chemistry TOPIC 11 Answers to Student Book 2 questions Further equilibrium Temperature Using experiments 2, 6 and 7: As the temperature increases, the percentage of ethene converted decreases (1), therefore the equilibrium moves to the left (1). Pressure Using experiments 2, 4 and 5:
1 INTRODUCTION TO CHEMISTRY. SECTION 1.1 CHEMISTRY (pages 7–11) This section defines chemistry and differentiates among its traditional divisions. It also distinguishes pure from applied chemistry and provides several reasons to study chemistry.
