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Classifying Matter

6th grade Science Ch. 3.2

What is the basic particle of any element? atom
What do you call the force of attraction between two atoms? chemical bond
What do you call a group of two or more atoms held together by chemical bonds? molecule
What is a substance that cannot be broken down into any other substance? element
A compound is represented by a ______? chemical formula
What are the simplest substances? elements
What has a positively charged center, or nucleus, containing smaller particles? atoms
A ______ of water is made up of an oxygen atom chemically bonded to two hydrogen atoms. molecule
Two atoms of the same element can also combine to form a ______? molecule
When atoms combine, they form a _______? chemical bond
What shows the elements in the compound and the ratio of atoms? chemical formula
What is a substance that is made of two or more elements that are chemically combined in a set ratio? compound
Water, ammonia, and carbon dioxide are all examples of ______? compounds
Elements and compounds are substances, but most materials are ______? mixtures
What is made of two or more substances that are together in the same place, but their atoms are not chemically bonded? mixture
Each substance in a _________ keeps its own properties. mixture
What is sand an example of? mixture
What are the two types of mixtures? heterogeneous and homogeneous
What is matter made of? elements
In what kind of mixture can you usually see the different parts and they can be separated out? heterogeneous
Is it easy or difficult to separate the parts of a homogeneous mixture? difficult
What are elements made of? the simplest substances by specific chemical and physical properties
How are elements and compounds related? When elements chemically combine, they form compounds with properties different from those of elements
What is the difference between a chemical symbol and a chemical formula? the chemical symbol represents an element with one or two letters. A chemical formula tells you the ratio of the atoms.
What are the four methods that can be used to separate mixtures? distillation, evaporation, filtration, and magnetic attraction
Created by: mmrandolph