Chemistry, 02.04.2020 02:43 vegeta8375
While modelling a volcano using two substances, Dereck observes bubbling and fizzing. Which of the following best names and explains the change that causes bubbling and fizzing?
A. Chemical change, because bubbling and fizzing indicate transfer of heat within substances
B. Physical change, because bubbling and fizzing indicate transfer of heat within substances
C. Chemical change, because bubbling and fizzing indicate production of a gas, which is a new substance
D. Physical change, because bubbling and fizzing indicate production of a gas, which is a new substance
Answers: 3
Chemistry, 21.06.2019 19:00
Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.
Answers: 2
Chemistry, 21.06.2019 21:10
How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103
Answers: 1
Chemistry, 22.06.2019 05:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
While modelling a volcano using two substances, Dereck observes bubbling and fizzing. Which of the f...
Mathematics, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
Computers and Technology, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
History, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
English, 12.12.2021 08:10
Mathematics, 12.12.2021 08:10
Computers and Technology, 12.12.2021 08:20