Vocab
Proton, Neutron, Electron
What do you call the factors that can change in an experiment?
A variable
Convert 350 ml to L
.350 L
Fill in the missing coefficient in the following equation:
C3H8 + 5 O2 -> 3 CO2 + __ H2O
4
Give the correct chemical symbol for Sodium
Fe
atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom
Isotope
The variable you change
the Independent variable
How many valance electrons are in Selenium?
6
Balance:
__ KClO3 -> __ KCl + __ O2
2 KClO3 -> 2 KCl + 3 O2
Is boiling water a chemical or physical change?
Physical
The name for an unbalanced equation
skeleton equation
A sample that is not changed, kept for a comparison (the "normal" version)
Control
Draw the Lewis dot diagram for Neon
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What type of reaction is this?
2 KClO3 -> 2 KCl + 3 O2
Decomposition
State the law of conservation of mass
Matter cannot be created or destroyed
A type of mixture that does not have a uniform composition
heterogenous mixture
Give an example of something that is not matter
energy, ideas, space, etc
In the compound Mg(CO3)2, how many oxygen are present?
6
What type of reaction is this?
C3H8 + 5 O2 -> 3 CO2 + 4 H2O
Combustion
The name for the chemicals that are made at the end of a reaction.
Products
one-twelfth the mass of a carbon atom having six protons and six neutrons
Atomic Mass Unit
What type of matter has a indefinite shape but definite volume?
Liquid
What is the atomic mass of Oxygen?
15.99
Balance:
_ Al + _ H2SO4 -> _ Al2(SO4)3 + _ H2
2 Al + 3 H2SO4 -> Al2(SO4)3 + 3 H2
Type of bond formed when electrons are shared.
Covalent