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
Ugo [173]
2 years ago
7

a chemist is studying an unknown substance he can break it into its elemental only by using chemical means.Based on this observa

tion, how should the unknown substance be classified
Chemistry
1 answer:
Vanyuwa [196]2 years ago
4 0

Answer:

Compound

Explanation:

We want to know if it's a compound or a mixture.

An example of a mixture is salt water: you can heat it hot enough to boil off the water, leaving only the salt. This is a physical change, which is how you know it's a mixture.

Something like gold is a compound: if you heat it, or hit it, you'll still only have gold. You can only break it down by chemical means, which is how you know it's a compound.

You might be interested in
needs help in coming up with a title for her science project. Problem statement is Do flowers last longer in the water with suga
nikdorinn [45]
Flower and sugar
flowers in sugar water? something along these lines
7 0
3 years ago
The stalk that holds the anther up so that pollination and fertilization can occur is the _______. :
Andrews [41]
The filament holds up the anther so that pollination and fertilization can occur!
6 0
3 years ago
Read 2 more answers
9
marishachu [46]

Answer:

B. as a food preservative in the manufacture of detergents

.........

8 0
2 years ago
How does an objects speed affect its kinetic energy?​
rewona [7]
Because it’s kinetic energy INCREASES the speed
8 0
2 years ago
What causes the biggest change mass or speed?
Norma-Jean [14]

Answer:

Explanation if an object is in motion and more force is applied to it, the object will begin moving faster. If two objects have the same mass and a greater force is applied to one of the objects, the object which receives the greater force will change speeds more quickly.:

6 0
2 years ago
Other questions:
  • How many moles are in 18g of sugar(C6H12O6)
    13·1 answer
  • The following is true about an index fossil:
    15·1 answer
  • The volume of a gas is halved and the temperature is unchanged. The pressure of the gas is
    14·2 answers
  • The concentration of iodide ions in a saturated solution of lead (ii) iodide is __________ m. the solubility product constant of
    11·1 answer
  • The empirical formula for a compound is CH2O, and the molar mass is 180.2 g/mol. Which is the molecular formula for this compoun
    7·1 answer
  • To calculate the enthalpy change for the reaction, 2CO (g) + O2 (g) Imported Asset 2 CO2 (g), you can use ΔHf0 values for each r
    13·1 answer
  • Which of the following places the elements in the correct order of increasing first ionization energy?
    5·1 answer
  • What are the number of protons, neutrons, and electrons in 19 F<br><br> 9?
    7·1 answer
  • How is fractional distillation of crude oil related to stoichiometry
    15·1 answer
  • A d orbital can<br> hold ____ electrons.<br> A. 2<br> B. 6<br> C. 10<br> D. 14
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!