Answers: 2
Biology, 21.06.2019 16:00
Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove
Answers: 2
Biology, 22.06.2019 01:00
Suppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer
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Biology, 22.06.2019 02:50
The response is the basis for vaccination. primary secondary tertiary none of the above
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Biology, 22.06.2019 06:20
Which direction does the energy flow in this energy pyramid ?
Answers: 1
A student runs 5 km each afternoon at a slow, leisurely pace. One day, she runs 2km as fast as she c...
Mathematics, 05.02.2020 10:57
Mathematics, 05.02.2020 10:57
Mathematics, 05.02.2020 10:57
Mathematics, 05.02.2020 10:57
Mathematics, 05.02.2020 10:57