Elements, Mixtures
&
Compounds
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Compounds
States of Matter
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Chemical Reactions
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Chemical Reactions
Atomic Properties
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Periodic Table
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Periodic Table
Law of Conservation of Mass
Random Chem Facts
1
The smallest unit of matter which has properties of a chemical element.
What is an atom?
1
These are the ingredients of a reaction; they are on the left side of the arrow.
What are reactants?
1
The subatomic particles are
What are protons, neutrons, and electrons.
1
Is this chemical equation balanced?
NaCHO3 + 3HC2H3O2 ---> NaC2H3O2 + 3H2O + CO2
What is not balanced
1
This tells the number of protons in an atom.
What is the atomic number?
2
Carbon & oxygen combine chemically to form carbon dioxide. What is carbon dioxide?
What is a compound?
2
An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?
What is the molecules will begin to move faster.
2
The name of the most reactive metal group (name of the family)
What is the Alkali family
2
In a ____________ system, all the matter stays inside.
What is closed?
2
Anything that has mass and takes up space?
What is matter?
3
Oxygen is what kind of matter?
What is an element
3
The symbolic representation of a chemical reaction using symbols and chemical formulas.
What is a chemical equation?
3
The charge of an electron.
What is negative.
3
The number placed after a symbol in a chemical reaction is
What is a subscript?
3
What gives an element its identity?
What is the number of protons.
4
Soil and air are examples of what type of mixtures? (answer in the correct order)
What are heterogeneous and homogeneous mixtures.
4
How can you make a substance change its state of matter?
What is by raising or lowering the temperature in the substance
4
Elements in the same column, have the same...
What is the same number of valence electrons
4
List at least 3 indicators of a chemical change.
What are color change, gas is produced (smell or bubbles or fizz), a solid is formed, bright light or temperature change, etc.
4
Which number represents as element?
What is number 2
5
What's the difference between an element and a compound?
What is elements cannot be broken down into simpler substances, while compounds can.
5
Which is an example of a chemical reaction:
*Water evaporates into air.
*Sugar dissolves in water.
*Vinegar added to baking soda forms a gas.
What is Vinegar added to baking soda forms a gas.
5
What determines an atom's reactivitity and ability to bond?
What are valence electrons
5
What stays the same in the reactants and products for chemical equations?
What are the number of atoms
5
The periodic table is organized by
What is atomic number