Physics, 30.06.2021 16:40 gadgetady5699
Investigations were carried out in a science lab to explore the topic of chemical and physical changes.
Investigation A
Step 1. Add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible.
Step 2. Heat the salt solution on a burner until only a whiInvestigations were carried out in a science lab to explore the topic of chemical and physical changes.
Investigation A
Step 1. Add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible.
Step 2. Heat the salt solution on a burner until only a white solid remains.
Investigation B
Step 1. Mix 10 tsp. white sugar into 100 ml water and stir until most or all of the sugar is no longer visible.
Step 2. Heat the sugar solution on a burner until the solution thickens and turns brown.
In which step(s) did a chemical change most likely occur?
Investigation A, Step 1 and Investigation B, Step 1
Investigation A, Step 2 and Investigation B, Step 2
Investigation A, Step 2 only
Investigation B, Step 2 onlyte solid remains.
Investigation B
Step 1. Mix 10 tsp. white sugar into 100 ml water and stir until most or all of the sugar is no longer visible.
Step 2. Heat the sugar solution on a burner until the solution thickens and turns brown.
In which step(s) did a chemical change most likely occur?
Investigation A, Step 1 and Investigation B, Step 1
Investigation A, Step 2 and Investigation B, Step 2
Investigation A, Step 2 only
Investigation B, Step 2 only
Answers: 1
Physics, 21.06.2019 12:40
Which of the following energy forms are invovled in a nuclear power plant ? heat ,sound , electrical , nuclear ,mechanical
Answers: 1
Physics, 22.06.2019 07:30
Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right
Answers: 3
Physics, 22.06.2019 11:30
Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?
Answers: 2
Investigations were carried out in a science lab to explore the topic of chemical and physical chang...
Mathematics, 21.11.2020 02:30
History, 21.11.2020 02:30
Biology, 21.11.2020 02:30
English, 21.11.2020 02:30
Law, 21.11.2020 02:30
World Languages, 21.11.2020 02:30
History, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
English, 21.11.2020 02:30
Biology, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
Mathematics, 21.11.2020 02:30
Social Studies, 21.11.2020 02:30