1) What is an atmosphere? a) the layer of gas that surrounds a planet that is held in place by gravity  b) all the water on earth c) it makes up an element d) it is a mountainous region  2) What is mass? a) smallest particle of an element b) the sum of all leaving matter on earth  c) a pure substance made up of the same atom  d) a measure of how much matter is present in a substance 3) What is an element? a) the sum of all leaving matter on earth b) a pure substance composed of the same type of atom throughout  c) much matter is present in a substance d) all the water on earths surface 4) What is a compound? a) a pure substance composed of the same type of atom throughout b) the smallest particle of an element  c) a new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction d) anything that has volume and mass 5) What is an atom? a) the smallest particle of an element; made of electrons, protons and neutrons b) a pure substance composed of the same type of atom throughout c) a new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction d) anything that has volume and mass 6) What is matter? a) the smallest particle of an element; made of electrons, protons and neutrons b) a pure substance composed of the same type of atom throughout c) a new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction d) anything that has volume and mass 7) What is a biosphere? a) the layer of gas that surrounds a planet that is held in place by gravity b) all the water on Earth surface c) the cool, rigid, outermost layer of earth that consist of the crust and the uppermost part of the mantle; broken into pieces or segments called plates  d) the sum of all living matter on Earth 8) What is the hydrosphere? a) the layer of gas that surrounds a planet that is held in place by gravity b) all the water on Earth surface; includes all water sources above and below the surface c) the cool, rigid, outermost layer of earth that consist of the crust and the uppermost part of the mantle; broken into pieces or segments called plates d) the sum of all living matter on Earth 9) What is the lithosphere? a) the layer of gas that surrounds a planet that is held in place by gravity b) all the water on Earth surface; includes all water sources above and below the surface c) the cool, rigid, outermost layer of earth that consist of the crust and the uppermost part of the mantle; broken into pieces or segments called plates  d) the sum of all living matter on Earth 10) What is a mixture? a) the layer of gas that surrounds a planet that is held in place by gravity b) a combination of two or more substances that do not chemically combine and can be separated c) a pure substance composed of the same type of atom throughout d) Anything that has volume and mass 11) What is the Periodic Table of Elements? a) A table in which all the known elements are arranged by properties and are represented by chemical symbols b) a combination of two or more substances that do not chemically combine and can be separated c) Anything that has volume and mass d) the cool, rigid, outermost layer of earth that consist of the crust and the uppermost part of the mantle; broken into pieces or segments called plates

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