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WorksheetsChemical Reactions - Chapter 2 & 3
Total questions: 18
Worksheet time: 9mins
What is the temperature at which a substance changes from the liquid phase to the gas phase?
boiling point
corrosive
reactant
melting point
What is the temperature at which a substance changes from the solid phase to the liquid phase
boiling point
corrosive
reactant
melting point
What is a starting substance that is part of a chemical reaction?
substance
product
reactant
molecule
What is an ending substance that is made during a chemical reaction?
substance
product
reactant
molecule
What is a word that means able to cause damage?
endothermic
fertilizer
extended structure
corrosive
What is a process in which atoms rearrange to form new substances?
chemical formula
extended structure
chemical reaction
reactant
What are the letters and numbers showing the types and number of atoms that repeat to make up a substance?
chemical formula
chemical reaction
the molecules
the atoms
During a chemical reaction, one or more reactants change into one or more __________.
substances
molecules
products
chemicals
During a chemical reaction, _______ do not change from one type to another.
chemicals
molecules
substances
atoms
During a chemical reaction, atoms rearrange to form different _____________.
groups of atoms
molecules
reactants
scales
During a chemical reaction, all of the _____________ that make up the reactants rearrange to form the products.
chemicals
molecules
substances
atoms
During a chemical reaction, atoms cannot be __________________.
created or rearranged.
rearranged or destroyed.
created or destroyed.
rearrange or disappear.
Which of the diagrams below shows the repeating groups of atoms that make up the ending substances?
Will the other properties of the samples likely be the same or different?
The other properties will likely be the same because both samples are gases at room temperature.
The other properties will likely be different because there are more repeating groups of atoms in Sample 1.
The other properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.
The other properties will likely be the same because the repeating groups of atoms that make up the two samples have the same types of atoms.
Which of the diagrams to the left shows the repeating groups of atoms that make up the samples the scientist mixed together?
Which of the diagrams below shows the repeating groups of atoms that make up the ending substances?
Which of the diagrams below shows the repeating groups of atoms that make up the samples Jacob mixed together?
What is a chemical reaction that releases energy through light or heat.?
exothermic
chemical
corrosive
endothermic
