package deal of CHEM.

ion - correct answer a molecule with a charge cation - correct answer a molecule with a positive charge anion - correct answer a molecule with a negative charge solid - correct answer definite shape and volume liquid - correct answer definite volume, takes the shape of its container g...

what are organisms are composed of? - correct answer Matter What is matter - correct answer Anything that takes up space and has mass. Is made up of elements What is an element - correct answer A substance that cannot be broken down to other substances by chemical reactions What is a compou...

Hypothesis - correct answer An educated guess based on observations, previous knowledge and intuition Experimentation - correct answer Observations taken under conditions that we can control so we can ask specific questions Data - correct answer Observations obtained from an experiment Theo...

Physical change - correct answer A change in the size or form of a substance. No new substance is formed. Chemical change - correct answer A new substance is formed. How to tell chemical change? - correct answer Precipitate, change in color, gas formed, heat and light, and difficulty to revers...

matter - correct answer anything that has mass and takes up space physical property - correct answer characteristic of a substance observed without changing it into another substance solid - correct answer definite shape and definite volume liquid - correct answer definite volume but indefi...

matter - correct answer anything that occupies space and has mass element - correct answer a pure substance that cannot be broken down into other substances by chemical reactions compound - correct answer substance containing two or more elements chemically combined in a fixed ratio atom - ...

Atom - correct answer the basic (and smallest) unit of a chemical element. Made up of three parts, proton, electron, neutron. Atomic radius - correct answer the average sitance from the centre of an atom's nucleus to its electrons in the farthest orbital. Boiling Point - correct answer the te...

What is chemistry? - correct answer The study of matter, it's properties, the changes that mater undergoes, and the energy associated with these changes. What is matter? - correct answer Anything that has both mass and volume. The "stuff" of the universe. What is meant by composition? - cor...

mass of an electron - correct answer 1/2000th of a proton relative charge and relative mass of a proton, neutron, and electron - correct answer proton: charge=+1 mass=1 neutron: charge=0 mass=1 electron: charge=-1 mass=1/2000th atomic number - correct answer the number of protons in the nucl...

What is a solution? - correct answer A homogeneous mixture made up of two or more substances that do not chemically combine; instead, the substances mix uniformly in the solution. What is a solvent? - correct answer The substance present in the largest quantity by volume, usually water. What i...

Mass in SI Units - correct answer Kg Time in SI Units - correct answer Seconds Temperature in SI Units - correct answer Kelvin -273 Celsius Volume in SI Units - correct answer Meters Cubed Purify a solid from a solid-liquid mixture - correct answer Filtration Purify a dissolved salt f...

Matter - correct answer Anything that has mass and takes up space Atom - correct answer The smallest unit of matter; composed of protons, neutrons and electrons Nucleus - correct answer The center of an atom; composed of protons and neutrons Proton - correct answer Positively charged subato...

State the method used to obtain sand from a mixture of sand and water - correct answer filtration State the method used to obtain solid copper sulfate from aqueous copper sulfate - correct answer crystallisation State the method used to obtain red food dye from a mixture of food dyes - correct...

law of conservation mass - correct answer mass is neither destroyed or created during ordinary chemical or physical reactions law of definite proportions - correct answer a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or...