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Criado por jazzy_angel1997
mais de 10 anos atrás
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Questão | Responda |
____ chloride is used to test for sulfates, gives a white precipitate | BARIUM |
arrangement of positive and negative ions in a repeating pattern to form a 3D structure ? | LATTICE |
Ions that cause fizzing (effervescence) when added to acid? | CARBONATES |
Chemical used to test for carbon dioxide goes cloudy/milky? | LIMEWATER |
____ Meal eaten by patients, who are X-raid | BARIUM |
Paper in chromatography acts as the _______ phase | STATIONARY |
Simple covalent structures are often _______ or liquids at room temperature | GASES |
Colour of copper in a flame test? | GREEN/BLUE |
Has 1- charge, gives a white precipitate when added to silver nitrate | CHLORIDE |
_______ Dioxide is the gas given off when acid reacts | CARBON |
Scientific word for the positive ion ? | CATION |
Metal that gives a red flame, has a 1+ charge | LITHIUM |
Type of bond formed between 2 non- metals a shared pair of electrons. | COVALENT |
The paper with the resulting pattern on it after chromatography has finished is _________ | CHROMATOGRAM |
A bond with a shared pair of electrons | COVLENT |
What is the charge on a non- metal ion? | NEGATIVE |
Type of reaction where two solutions react together to make an insoluble solid | PRECIPITATION |
What is a nucleus in an atom? | THE CORE OF THE ATOM CONTAINS PROTONS AND NEUTRONS |
What is the colour of chloride precipitates also colour of precipitate formed when barium chloride reacts with sulpphate ions? | WHITE |
Ionic compounds conduct electricity only when ______ or dissolved | MOLTEN |
What is a ionic compounds? | COMPOUNDS THAT CONTAIN POSITIVELY CHARGED METAL IONS AND NEGATIVELY CHARGED NON-METAL IONS |
Simple convalent structures don't ______ electricity | CONDUCT |
Distance of spot/distance of solvent front=RF___ | VALUE |
Before evaporation, wash the insoluble solid with ____ water to removes impurities. | DISTILLED |
Number of covalent bonds around each carbon atom in diamond | FOUR |
Technique used to separate coloured substances | CHROMATOGRAPHY |
Colour of sodium in flame test (____/orange) | YELLOW |
How atoms are arranged in graphite _______ and in layers | HEXAGONAL |
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