WorksheetsFOURTH PT IN SCIENCE 10
Total questions: 50
Worksheet time: 43mins
What is the left part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Products
What is the right part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Products
What is the total number of atoms present in 5Na3PO4?
5
40
How many Mn atoms are found in the following compound?
2MnO4
2
4
What is the little number after an element in a chemical equation called?
Example: H2
Coefficient
Subscript
How many elements are in C6H12O6?
3
4
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Subscript
Is the following equation balanced?
4Fe + 3O2 ---> 2Fe2O3
YES
NO
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
Mg and O
MgO
Balance this equation:
H2 + Cl2 ---> HCl
H2 + Cl2 ---> 2HCl
H2 + 3Cl2 ---> 6HCl
How many Oxygen atoms are in 2SO4?
2
8
Which side of a chemical equation is the reactant side?
Left (before the yields sign)
Right (after the yields sign)
Which side of a chemical equation is the product side?
Left (before the yields sign)
Right (after the yields sign)
PCl5 + ___ H2O → ___ HCl + H3PO4
4, 5
2,2
__ Al + __ FeO → Al2O2 + __ Fe
2,1,2
2, 2, 2
2
3
_SnO2 +_H2-->_Sn +_H2O
1,2,1,2
1,2,2,1
_CF4 + _Br2 -- _CBr4 + _F2
1,2,2,1
1,2,1,2
Matter cannot be gained or lost in a chemical reaction.
Matter can only be lost in a chemical reaction.
yes
no
2
4
subscript
coefficient
3
6
The two sides of a chemical equation are called?
Reactants (left) and Products (right)
Reactants (left) and Results (right)
What is the monomer for proteins?
Fatty Acids
Amino Acids
What is the monomer for nucleic acid?
Monosaccarides
Nucleotides
Compounds that end in 'ase" are considered enzymes. Enzymes are:
Proteins
Carbohydrates
Sugar molecule, a major source of energy for cells, produced during photosynthesis.
enzyme
glucose
Which are examples of lipids?
fats, oils, waxes
meats, enzyme, lactase, eggs
1. The four most common elements found in biomolecules are __________.
Carbon, Oxygen, Nitrogen, Hydrogen
Carbon, Nitrogen, Hydrogen, Sulfur
What is the function of nucleic acid?
stores energy
stores genetic information
Cell membranes are made of this:
Lipid
Nucleic acid
According to the Kinetic Molecular Theory a liquid's
Particles are held close together by intermolecular forces.
Particles are vibrating in place and closely packed.
The following are true about solid except ______________.
Very little space between particles.
Particles with no definite pattern.
Adding heat to a solid makes the particles move...
Slower
Faster
Gas pressure is caused by _____________.
Gas molecules colliding with surfaces.
Gas molecules condensing to a liquid.
Solid
Liquid
Gas
A 0.50 L of oxygen kept in a cylinder at an unknown pressure is needed to fill a 4-Liter evacuated reactor vessel of 0.980 atm pressure. If the temperature is the same for both containers, what is the initial pressure in the cylinder?
A. 78.4 atm
B. 78.8 atm
If there is 5.4 L of gas in a piston at a pressure of 1.5 atm and is compressed until its volume is 4.2 L, what will the new pressure inside the piston be?
B. 1.83 atm
C. 1.93 atm
The arrow sign in the chemical equation is read as __________.
combined with
will produce
It is type of chemical reaction wherein a single compound is broken down to two or more elements and compound.
combination
decomposition
ZnCO3(s) → ZnO(s) + CO2(g)
Synthesis
Decomposition
What type of reaction involves one element replacing another element in a compound?
Single Displacement Reaction
Double Displacement Reaction
Mg(s) + O2(g) → MgO(s)
Synthesis
Combustion
Combination reaction
Combustion reaction
Single replacement reaction
Double replacement reaction
Zn(s) + CuCl2(s) → ZnCl2(s) + Cu(s)
Single-Replacement
Double-Replacement
2. A type of reaction wherein 2 or more reactants combine to form a single product.
Combination (Synthesis) Reaction
Decomposition Reaction
Single replacement reaction
Double replacement reaction
