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Science Test
Question | Answer |
---|---|
All matter is made of these; shown on the periodic table | Elements |
Good conductors of heat and electricity | Metals |
Subatomic particle found in the nucleus of an atom; has a positive | Protons |
Subatomic particle found in the nucleus of an atom; has zero charge | Neutrons |
Subatomic particle located far from the nucleus; has a negative charge | Electrons |
Type of bonding that occurs when electrons of metal are transferred among a group of atoms. | Metallic bond |
Type of bonding that occurs when electrons are transferred from atoms of metals to atoms of non-metals | Ionic bond |
Atom that has a different number of electrons and protons | Ion |
Type of bonding that occurs when electrons are shared between atoms of non-metals or non-metals & metalloids | Covalent bond |
Most common compound on Earth | Water |
Two most abundant elements in the universe | Hydrogen & helium |
Two elements that are liquids at room temperature | Bromine & Mercury |
Two elements found in al organic compounds | Carbon & hydrogen |
Six noble gases | Helium(He), Neon(Ne), Argon(Ar),Krypton(Kr), Xenon(Xe),And Radon(Rn) |
Chemical formula of Oxygen | O2 |
Chemical formula of hydrogen | H2 |
Chemical formula of carbon monoxide | Co |
Chemical formula of carbon dioxide | Co2 |
Chemical formula of water | H2O |
Chemical formula of hydrogen peroxide | H2O2 |
Chemical formula of glucose | C6H12O6 |
What does 2 mean in the formula H2O | There are 2 hydrogen atoms |
How is a molecules of an element different from a molecule of a compound | A molecule element has two or more elements all are the same A molecule compound has two or more different elements |
Metal or non-metal Calcium | Metal |
Metal or Non-metal Helium | Non-metal |
Metal or non-metal Hydrogen | Non-metal |
Metal or non-metal Sodium | Metal |
Metal or non-metal Tin | Metal |
Metal or non-metal Copper | Metal |
Metal or non-metal Neon | Non-metal |
Metal or non-metal Gold | Metal |
Metal or non-metal Oxygen | Non-metal |
Metal or non-metal Iron | Metal |
Metal or non-metal Chlorine | Non-metal |
Metal or non-metal Nitrogen | Non-metal |
What is the chemical formula for this structural formula OâCâ | Co2 carbon dioxide |
Why is carbon dioxide an inorganic compound | Because carbon dioxide does not have hydrogen |