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WorksheetsNGSS.MS-PS1-2
Total questions: 20
Worksheet time: 18mins
Bubbles produced as in the yeast and peroxide demonstration is an example of a --- property.
Chemical
Physical
Tammy wanted to test the pH of a liquid solution. She added three drops of Phenol Red to solution, after a few moments she noticed a bright yellowish cooler. What is most likely the pH of the solution?
6.8 or below
8.2 and above
Neutral
None of these because I do not have enough information.
Vinegar + baking soda reaction.
Is it a physical or chemical change?
Physical
Chemical
What reaction has the following general formula:
AB + CD --> CB + AD
Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
In this equation, the reactants are on the
left of the arrow
right of the arrow
50 ml of water was added to the graduated cylinder. After we drop in the object, the new water level goes up to 60 ml. What is the volume of the blocks?
8 ml
10 ml
60 ml
5 ml
Which of the following options provides evidence of a CHEMICAL change?
Wood is burned releasing ash and smoke
Rocks separate when soil is sifted
Water turns to ice when you put it in the freezer
Salt dissolves in water
Properties that can only be observed or measured by changing the chemical identity of a substance.
Physical Properties
Combustible Properties
Chemical Properties
Changeable Properties
Substances present at the beginning of a chemical reaction
substances present at the end of a chemical reaction
Patrik works at a company that makes paper and needs a chemical to make the paper brighter. He mixed two colorless substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.
After mixing, Patrik found two white substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?
अम्ल नीले लिटमस को ..........कर देता है।
हरा
लाल
पीला
रंगहीन
a starting substance that is part of a chemical reaction
Which of the following is NOT a characteristic of a chemical change?
Change in color
Formation of a gas
Change in shape
Production of heat
