Science - Chemistry - The Periodic Table 3.0 / 5 based on 1 rating ? Revision SkillsOtherNone Created by: mkenzieCreated on: 20-02-13 19:22 What is a compound? consist of two different atoms that are chemically bonded together 1 of 20 What is an element? a substance which cannot be divided by chemical methods 2 of 20 What do elements consist? A single atom type 3 of 20 What is a mixture? Made up by two or more different substances which are mixed but are not combined chemically and can easily separate. 4 of 20 What group is sodium in? 1 5 of 20 Name the first 10 elements (with their signs) of the periodic table Hydrogen (H) Helium (He) Lithium (Li) Beryllium (Be) Boron (B) Carbon (C) Nitrogen (N) Oxygen (O) Fluorine (F) Neon (Ne) 6 of 20 What is an atom? Atoms are basic building blocks of all substances 7 of 20 What do atoms consist of? They consist of a neucleus at their centre with electrons orbiting it 8 of 20 What does a neucleus contain? smaller particles called protons and neutrons 9 of 20 The atomic number = ? number of protons 10 of 20 Number on protons = ? no. of electrons (atoms must be neutral) 11 of 20 relative atomic mass = ? number of protons and neutrons 12 of 20 If (Li) atomic no. is 3, and the mass no. is 7, what would be the answer for, (a) no.of protons (b)no.of electrons (c)no.of neutrons a)3 b)3 c)4 13 of 20 If (H) atomic no. is 1, and the mass no. is 1, what would be the answer for, (a) no.of protons (b)no.of electrons (c)no.of neutrons A)1 B)1 C)0 14 of 20 +(Pos) = ? lost an electron 15 of 20 -(neg) = ? add an electron 16 of 20 How would you write this scientifically? Sodium that has lost one electron. Na+ 17 of 20 How would you write this scientifically? Magnesium that has lost 2 electrons Mg2+ 18 of 20 How would you write this scientifically? Oxygen that has gained 2 electrons O2- 19 of 20 How would you write this scientifically?Chlorine that has gained 1 electron Cl- 20 of 20
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