NEW
Font size
WorksheetsMelvin Montford Law Of Conservation game
Total questions: 21
Worksheet time: 11mins
Q. Which is Chemical Equation is Balanced?
CH₄+O₂------CO₂+2H₂O
H₂+O₂-----2H₂O₄
4Al+3O₂-----2Al₂O₃
Q. B₂ + 3W₂ => 2BW₃
Balanced
Unbalanced
Q. Which are chemical changes
Iron rusting
Glass breaking
Hair cut
Clothing ripping
Q.
What is the law of conservation of mass?
Within a closed system, mass does not change
The part of the universe being studied
The rest of the universe that interacts with the system
A system that freely exchanges matter and energy
System
The part of the universe being studied
The rest of the universe that interacts with the system
Within a closed system, mass does not change
A system that freely exchanges matter and energy
Surroundings
Within a closed system, mass does not change
The rest of the universe that interacts with the system
Molecule
A group of atoms bonded together
Basic unit of a chemical element
Subscript
Q.
A system that only exchanges energy with its surroundings; mass is conserved.
answer
Closed System
Open System
Can matter be created or destroyed?
Yes, it can be created.
Yes, it can be destroyed.
No, matter is always conserved
Q.
The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
True
False
What is the law of conservation of mass?
The mass of the reactants is the same as the mass of the products
The mass of all reactants are changed during a physical or chemical change
What is the law of conservation of mass?
The mass of the reactants is the same as the mass of the products
The mass of the products is different than the mass of the reactants.
Matter changes when reacted or changed.
What is the Law of Conservation of mass?
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
Mass is never created or destroyed
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
The product always weighs more than the reactant
They both will weigh the same
The reactant will weigh more than the product
Evidence of a chemical reaction include:
jnun
No new substance
jju8ju8juj
Bubbles forming
Evidence of a chemical change does NOT include:
New substances
Heat produced
Phase change
If four hydrogen atoms react with two hydrogen atoms, how many atoms will be in the product?
1
2
3
6
Since gasses weigh nothing, when they are produced in a reaction they do not have to be accounted for.
True
False
is this game fun
nah
yah
W
L
is this standard a L or W
W
P
H
JNBJb
All chemical equations create or destroy matter, which is why scientists weigh their reactants so they can see how much was created or destroyed
true
false
