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Law of Conservation
Vocabulary Matters
More terms
Atoms and such
This and That
100
If you have 100 grams of iron and 60 grams of sulfur in your reactant, how many grams of iron sulfide will you have in your product?
160 grams
100
Anything that has mass and takes up space
matter
100

a chemical reaction that absorbs energy is known as

(Review)

endothermic

100

When atoms share electrons it is known as this type of bond

covalent

100

CaCO is an example of a

chemical formula

200
A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be
balanced
200

The substances listed on the left side of the equation

reactant

200

The number placed below an elements symbol is known as a

subscript

200

How many atoms are in this term: 2 HCl

4

200

What is the ratio of atoms in a bond formed between aluminum and chlorine?

1:3

300
In a chemical reaction, what does the principle of conservation of mass mean?
matter is not created or destroyed
300
a shorter, easier way to show chemical reactions, using symbols instead of words, is called a
chemical equation
300

what goes in must come out

law of conservation of matter

300

The ratio of atoms in a water molecule are is:

2:1

300

If there are 14 carbon atoms and 12 oxygen atoms in your reactant, what is true of your product?

It must contain 14 carbon atoms and 12 oxygen atoms

400
If the products formed from burning a candle are mostly carbon, carbon dioxide and water, what elements are present in the reactant of that reaction?
Carbon, Oxygen, Hydrogen
400

The 4 in the term 4 CO2 is called a 

coefficient


400

reaction that produces heat energy that leaves the system (Review)

exothermic

400

When a cation bonds with anion, it is known as a ___________ bond. 

ionic

400

In terms of chemical bonds and electrons, what kinds of changes occur between atoms when substances undergo chemical reactions?

Chemical bonds form between atoms that share, gain, or lose electrons, or bonds break and new bonds form.