WorksheetsChemistry Final Test
Total questions: 35
Worksheet time: 22mins
I am the part of the atom with no charge
Electron
Neutron
Proton
I am the part of the atom with a negative charge.
Electron
Neutron
Proton
I am the part of the atom that has a positive charge
Electron
Neutron
Proton
I am the part of the atoms located outside the "nucleus"
Electrons
Protons
Neutrons
What is the part of the atom located in the "nucleus"?
Electron and Proton
Proton and Neutron
Neutron and Electron
Protons only
What is the pH of Water
1
7
14
The substance that is being dissolved in an aqueous solution?
Solute
Solvent
Solution
Substance
What is the substance doing the dissolving in an aqueous solution?
Solution
Substance
Solvent
Solute
02 is a molecule.
True
False
Na (Sodium) is a nonmetal
True
False
The mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction is an example of?
Law of Conservation of Organism
Newton's 1st Law of Motion
Law of Conservation of Matter
Law of Conservation of Equilibrium
An element has the atomic number of 9 and the mass number of 19. How many protons, neutrons and electons does it have?
9 protons, 10 neutrons, and 9 electrons.
9 protons, 9 neutrons, and 9 electrons.
10 protons, neutrons, and 9 electrons.
9 protons, 9 neutrons, and 10 electrons.
What would happen in an aqueous solution of Flouric acid mixed with Lime (base)
Increase pH
Decrease pH
Neutralize pH
Will approach 7 as the reaction occurs.
A piece of iron is placed in a breaker containing 75 Ls of water. The volume of the breaker increases to 100 Ls. If the mass of the piece of iron is 780g, what is its density? Density= mass/volume
7.8 g/cm³
78 g/cm³
.78 g/cm³
Which of the elements would be the best conductor?
Copper
Helium
Argon
Flourine
What is the smallest unit of matter to retain its properties?
DNA
Atoms
Elements
Cells
How many valence electrons are in S?
3
4
5
6
How many valence electrons are in group 7a?
3
5
7
8
An aqueous solution contains any liquid for substance to be dissolved in.
True
False
2C + 2H2O ----> 1CH4 + 1 CO2 is balnced.
True
False
2C + 2H2O ----> 1CH4 + 1 CO2. How many Oxygen are present?
1
2
3
4
4 NH3 + 3 O2 -----> 3 N2 + 6H2O is balanced.
True
False
Why do Group 1 elements possibly react violently with H2O?
Because of the valence electron count of 1
Because of being a poor conductor in water
Because it is only able to bond to Noble gases
Group 1 does not react with H2O
3C12H19Cl3O8, how many Cl are present in Sucralose?
8
6
9
19
3Ca3(PO4)2, How many Phosphorus atoms are present in this molecule?
4
6
8
12
Lemon juice is an example of -
a base
an acid
a neutral substance
What is the only substance with a neutral pH of 7?
Milk
Orange Juice
Pure Water
Blood
All Water
In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?
4 grams
6 grams
8 grams
10 grams
In the equation, 46 grams of sodium (Na) reacted with 36 grams of water (H2O). If 2 grams of hydrogen gas (H2) are produced by this reaction, what is the mass of sodium hydroxide (NaOH) produced?
10 grams
44 grams
80 grams
82 grams
A(n) _______ is a substance with a pH less than 7.
