A white powder is added to a solution. The images show observations made before the powder is added, just after the powder has been added, and a little while later. (The liquid in the small beaker is phenol red solution.) What evidence shows that a chemical change has taken place?
Chemical Changes GIZMOS

Quiz
•
Chemistry
•
12th Grade
•
Medium
TRACEY RANKIN
Used 3+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A gas is produced
The pH changes
The temperature changes
All answers are correct
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A reaction produces a gas, which is collected in a glass cylinder. When a glowing splint is placed inside the container, it burns brightly, as shown. Which gas was produced in the reaction?
Hydrogen
Oxygen
Carbon Dioxide
Ammonia
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A chemical reaction is done in the setup shown, resulting in a change of mass. What will happen if the same reaction is done in a sealed container that is placed on the electronic balance?
The mass will decrease because matter is lost in this reaction.
The mass will stay the same because the gases produced in the reaction are kept inside the container.
The mass will increase because the solids react with gas to produce more solids.
There is not enough information to predict what will be produced.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Based on its formula, what type of reaction occurs between silver nitrate (AgNO3) and copper (Cu)?
2AgNO3 + Cu → 2Ag + Cu(NO3)2
Synthesis
Decomposition
Single replacement
Double replacement
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
When hydrogen peroxide (H2O2) is added to potassium iodide (KI) solution, the hydrogen peroxide decomposes into water (H2O) and oxygen (O2). The chemical equation for this decomposition reaction is:
2H2O2 → 2H2O + O2
In this reaction, the potassium iodide is needed for the reaction to happen, but it isn’t changed in the reaction and can be used again. What is the role of potassium iodide in this reaction?
Reactant
Product
Precipitate
Catalyst
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
_______ occurs when one or more substances are transformed into different substances.
A splint test
A chemical change
A catalyst
A mixture
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The terms endothermic and exothermic are used to describe which type of change?
color
gas
temperature
pH
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An indicator, such as phenol red, will give you what type of information about a chemical reaction?
a change in mass
a product change
a temperature change
a pH change
Similar Resources on Wayground
11 questions
Chemical Reactions

Quiz
•
9th - 12th Grade
10 questions
10-minute Quiz : Chapter 30 Redox reactions

Quiz
•
9th - 12th Grade
10 questions
5.2.1 Hess' Law

Quiz
•
12th Grade
8 questions
Stoichiometry Problems

Quiz
•
10th - 12th Grade
10 questions
Solutions, solubility and precipitation reactions

Quiz
•
9th Grade - University
11 questions
Chemical Kinetics

Quiz
•
12th Grade
10 questions
Thermodynamics AQA A Level

Quiz
•
12th Grade
11 questions
Endothermic/Exothermic

Quiz
•
9th - 12th Grade
Popular Resources on Wayground
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice

Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers

Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons

Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade