1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
trapecia [35]
3 years ago
7

Mr. McPhillip has a ribbon of magnesium (Mg), a silvery metal. As a demonstration for his class, he sets the metal on fire. It b

urns brightly, leaving behind a whitish powder.
Mr. McPhillip has a ribbon of magnesium (Mg), a silvery metal. As a demonstration for his class, he sets the metal on fire. It burns brightly, leaving behind a whitish powder.

The magnesium is a(n) _______, and the powder produced by burning it is a(n) _______.
A.
element; compound
B.
compound; compound
C.
compound; element
D.
element; element
Chemistry
2 answers:
ICE Princess25 [194]3 years ago
8 0
Magnesium is an element and magnesium oxide is a compound, so Answer A.
OLEGan [10]3 years ago
5 0
A. Magnesium is an element and after it is burned it is a compound
You might be interested in
A piece of wood burns to form ash. ____C_____ Water evaporates into steam. ____P_____ A piece of cork is cut in half. ____P_____
IceJOKER [234]

Answer:

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

A piece of cork is cut in half. __ Physical change

A bicycle chain rusts. _____Chemical change

Food is digested in the stomach. _____Chemical change

Water is absorbed by a paper towel. _____Physical change

Hydrochloric Acid reacts with zinc. _____Chemical change

A piece of an apple rots on the ground. ____Chemical change

A tire is inflated with air - Physical change

A Plant turns sunlight, CO2, and water into sugar and oxygen. _Chemical change

Sugar dissolves in water - Physical change

Eggs turn into an omelet. _____Chemical change

Milk sours. Chemical change

A popsicle melts. _____Physical change

Turning brownie mix into brownies. Chemical change

Explanation:

Matter undergoes two types of changes: physical changes and chemical changes.

A physical change is one that affects only the physical properties of a substance such as colour, size, shape, etc., and in which no new substances are formed. Physical changes are easily reversible.

Chemical changes are changes which affect the chemical characteristics and properties of a substance such as reactivity, acidity, basicity, etc., resulting in the formation of new substances.

The following changes below are categorized as either physical or chemical changes based on which of the properties of the substance is affected and whether new substances result or not.

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

A piece of cork is cut in half. __ Physical change

A bicycle chain rusts. _____Chemical change

Food is digested in the stomach. _____Chemical change

Water is absorbed by a paper towel. _____Physical change

Hydrochloric Acid reacts with zinc. _____Chemical change

A piece of an apple rots on the ground. ____Chemical change

A tire is inflated with air - Physical change

A Plant turns sunlight, CO2, and water into sugar and oxygen. _Chemical change

Sugar dissolves in water - Physical change

Eggs turn into an omelet. _ Chemical change

Milk sours - Chemical change

A popsicle melts. _____Physical change

Turning brownie mix into brownies - Chemical change

3 0
3 years ago
Which statement is true if the Hrxn of a reaction is positive?
erma4kov [3.2K]
I think it is b..................................................
7 0
3 years ago
Read 2 more answers
What does it mean for heat to be transferred by radiation?
iris [78.8K]

Answer:

Here's what I get  

Explanation:

It means that the heat comes directly at you without relying  on any material to conduct it.

For example, you feel the heat from a campfire even if the wind is blowing crosswise to you and the fire.

5 0
3 years ago
Which elements did you include in your question?
SIZIF [17.4K]

Answer:

It should be all of them

Explanation:

It’s because it was in your question you wrote out

3 0
2 years ago
Sarah is in her chemistry lab doing an experiment. When she goes to take the mass of the chemical she is working with, she disco
cupoosta [38]

Answer:

10 x 5 = 50

Explanation:

50 is the mass of her chemical.

7 0
3 years ago
Other questions:
  • Which property best indicates that a compound contains an ionic bond?
    12·1 answer
  • Which type of bond will most likely be found in HBr?
    13·2 answers
  • A covalent bond between to atoms results when the atoms
    6·1 answer
  • According to the reaction represented by the unbalanced equation above, how many moles of so2(g) are required to react completel
    8·1 answer
  • How many moles are in 1.204 x 10^24 atoms of gold?
    7·1 answer
  • Which compounds are most likely to have ionic bonds?
    13·2 answers
  • Which of the following is not an example of a physical property?
    15·1 answer
  • How much heat must be removed from 357 g of water at 76.9C in order to cool it down to 18.1C?
    9·1 answer
  • What are some good movies to watch on HBOMAX
    13·2 answers
  • Olive Garden:
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!