Flashcards
Chemistry chapter 1 and 2
Flashcards do conjunto (27)
- 1-What are all substances made up of?-atoms
- 2-What do the following symbols stand for (s), (l), (g)?-solid, liquid and gas
- 3-What is the name of two or more substances that are not chemically combined together?-mixture
- 4-What is the name of two or more substances that are chemically combined together?-compound
- 5-What is the name for a material that is made up of only 1 type of atom?-element
- 6-What process is used to separate liquids with different boiling points?-fractional distillation
- 7-What process is used to separate a liquid and an insoluble solid?-filtering
- 8-What process is used to detect the different dyes in food colourings?-chromatography
- 9-Who came up with the idea of the ‘Plum Pudding’ model?-JJ Thompson
- 10-Which Scientist proved that there was a dense positive nucleus?-Ernest Rutherford
- 11-What is the name of the negative subatomic Particle?-electron
- 12-What is the name of the positive subatomic Particle?-proton
- 13-What is the name of the neutral subatomic Particle?-Neutron
- 14-What does the Atomic Number of an atom show?-The number of protons
- 15-What is the atomic mass number the sum of?-The number of protons and neutrons
- 16-What do you call an atom of the same element with different numbers of neutrons?-isotope
- 17-What is the name of a charged atom?-ion
- 18-What is the name of group 0?-Nobel gasses
- 19-What is the name of group 1?-Alkali metals
- 20-What is the name of group 7?-Halogens
- 21-What gas is formed when an alkali metal reacts with water?-Hydrogen
- 22-How does the reactivity of the halogens change as you go up the group?-They become more reactive
- 23-How does the reactivity of the alkali metals change as you go down the group?-They become more reactive
- 24-How many electrons are on the outer shell of group 1 metals?-1 electron
- 25-How many electrons are on the outer shell of group 7 elements?-7 electrons
- 26-Are the metals on the left or the right of the periodic table?-Left
- 27-Are the non-metals on the left or the right of the periodic table?-right