Atoms 0.0 / 5 ? ChemistryAtoms and compoundsIGCSEAQA Created by: Nicole DCreated on: 18-12-13 16:16 Atoms 21 Questions 1 of 22 What is an element made up of? One type of atom 2 of 22 Where are the elements listed? In the periodic table 3 of 22 What is an atom? Simplest form of the element 4 of 22 What does it display? The chemical properties of that element 5 of 22 What is a compound? Two or more different types of atoms chemically combined in a fixed ratio 6 of 22 What is a molecule? Two or more atoms chemically combined using covalent bonds 7 of 22 What is the difference between a compound and a molecule? The atoms are different in a compound but in a molecule the atoms may be the same 8 of 22 What are the 3 subatomic particles? Protons, Neutrons and Electrons 9 of 22 What are the relative charge and relative mass of protons? Relative charge: +1 ; Relative mass: 1 10 of 22 What are the relative charge and relative mass of neutrons? Relative charge: 0 ; Relative mass: 1 11 of 22 What are the relative charge and relative mass of electrons? Relative charge: -1 ; Relative mass: 1/1836 (almost 0) 12 of 22 Atoms contain a central ____(1)____ containing ____(2)____ and _____(3)_____ (1) Nucleus ; (2) Protons ; (3) Neutrons 13 of 22 The nucleus is ______ ________ compared to the size of the whole atom. Very small 14 of 22 The nucleus is surrounded by ____(1)____ in energy levels (or ___(2)___) (1) Electrons ; (2) Shells 15 of 22 Atoms have no _________ ________ because they contain the same amount of protons and __________ Electric charge ; Electrons 16 of 22 Atomic number = no. of __________ Protons 17 of 22 Mass number = no.of _________ + no. of _________ Protons ; Neutrons 18 of 22 Number of protons = ___________________ Atomic number 19 of 22 Number of neutrons = ___________________ Mass number - Atomic number 20 of 22 Number of electrons = ___________________ Atomic number 21 of 22 Fluorine has a mass number of 19 and an atomic number of 9. Calculate the no. of protons, neutrons and electrons. Protons = 9 ; Neutrons = 10 ; Electrons = 9 22 of 22
Comments
No comments have yet been made