Chemistry 1
Substance that contains space and mass
What is Matter
All matter exists in three forms solid, liquid and
What is Gas
How many protons, neutrons, and electrons are in Al3+?
13 Protons, 14 Neutrons, 10 Electrons
The atomic number tells us this.
What is the number of protons?
What is the atomic number of neon (Ne)?
10
What is the simplest form of matter?
What are Elements
Given the following equation, how many moles of water are produced from 4 mols of oxygen?
2H2 + O2 -> 2H2O
8 mols
What type of change occurs when ice melts to water
What is Physical
Name all 3 subatomic particles.
Protons, Neutrons, Electrons
Which of the following are monatomic elements:
Chlorine (Cl)
Helium (He)
Argon (Ar)
Oxygen (O)
Neon (Ne)
What is:
Helium (He)
Argon (Ar)
Neon (Ne)
What is the basic unit of matter that cannot be divided into simpler substances by ordinary chemical means
What is Atom
Valence electron number increases as you move ____ to _____ across the columns of the periodic table.
left, right
An atom from group 2A forms an ionic bond with an atom from another group. Which group is the second atom MOST LIKELY from?
What is Group 6A (Group 16)
The type of bond where electrons are transfered
Ionic Bond
What's the molar mass of Fe?
55.85 g/mol
What is the molar mass of H2O?
What is 18g/mol
What is the chemical reaction between Hydrogen and Sulfur and explain how valence electrons relate to their bond?
H2+S --> H2S
S has 6 valence electrons and needs 2 more to follow the octet rule.
H has 1 valence electron so we need 2 of them to follow the octet rule.
What is a valence electron?
Electron in the outermost valence shell of an atom
In covalent bond the valence electrons are
Shared
Group 1A metals have a charge of __________so when they react with hydrogen, the hydrogen in the product of the reaction has a charge of _________. Group 7A nonmetals have a charge of _______ so when they react with hydrogen, the hydrogen in the product of the reaction has a charge of _________.
+1, -1, -1, +1
A substance formed by chemically combining two or more atoms of different elements is known as
What is Compound
Water is an example of this state of matter
What is Liquid
The sum of protons and neutrons in the nucleus of an atom is known as the _________.
Mass number
Will oxygen gain or lose electrons?
Gain two electrons
How many moles of oxygen are in 32 g?
2 mols
The elements can be found on the right side of the periodic table of the elements.
What are non metals
Balance the following equation:
___Fe + ___Cl2 -> ___ FeCl3
2 Fe + 3 Cl2 -> 2 FeCl3
N2 (g)+3 H2 (g) → 2 NH3 (g)
Using the mole ratio from the chemical equation, calculate how many moles of ammonia (NH3) would be produced if 2.5 moles of nitrogen (N2) reacted with excess hydrogen (H2).
(2.5 N2) * ((2 NH3)/(1 N2)))= 5NH3
N2 (g)+3 H2 (g) → 2 NH3 (g)
Using the mole ratio from the chemical equation, calculate how many moles of ammonia (NH3) would be produced if 2.5 moles of hydrogen (H2) reacted with excess nitrogen (N2).
(2.5 H2) * ((2 NH3)/(3 H2))= 1.67 NH3
matter is neither created or destroyed in a chemical reaction
Law of Conservation of Matter/Mass