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
aleksandrvk [35]
3 years ago
8

Which substance is one that cannot be separated or broken down into simpler substances by chemical means? (Element, pure)

Chemistry
1 answer:
Y_Kistochka [10]3 years ago
5 0

Answer:

gold wire (Au)

Explanation:

A substance that cannot be separated or broken down into simpler substances by chemical means is an element.

Between the given options only gold wire is an element, Au.

A way of knowing that it is an element is noticing that its formula is a single symbol which corresponds to an element found in the periodic table, unlike a combination of said symbols (like NaCl or H₂O).

You might be interested in
We both have 10 neutrons in our nuclei. What are we?
Goryan [66]
Not so sure but i think neon
7 0
3 years ago
Read 2 more answers
Most minerals are _______ at room temperature.<br><br> solid<br> gas<br> liquid
Tomtit [17]

Answer:

solid

Explanation:

4 0
3 years ago
Read 2 more answers
PLZ HELP FAST
astra-53 [7]
#1
The correct answer is A.)

Because the animal has sperm that means that the offspring will be different. This is because at conception, the two parents sex cells combine their DNA to make a new creature.

#2
The correct answer is B.)

Genetic variation produces different offspring, and some are more adapted to others. The ones that survive pass on their genes. This is know as "Survival of the Fittest". Asexually organisms are exactly like their parents, so if they have any type of genetic defaults, then their offspring will get them too. 

Hope this helps! 

<span />
3 0
3 years ago
What kind of properties can only be observed when a substance changes into a different substance?
Shkiper50 [21]
<h3>Answer:</h3><h2>Chemical properties</h2><h3>Explanation:</h3>

By its very definition, a chemical property is one which is exhibited as a result of a chemical reaction. This may happen during or after the reaction. This is because in a chemical reaction there is a transformation in the physical composition of the components and this directly affects its chemical properties.

4 0
3 years ago
7. When solid carbon reacts with oxygen gas to produce carbon dioxide gas, woul the triangle H value be on the reactant or produ
garik1379 [7]

When solid carbon reacts with oxygen gas to produce carbon dioxide gas. the deltaH (enthalpy change ) value is negative .DeltaH would be on the product side of the equation.

<h3>What is enthalpy change? </h3>

In a thermodynamic system, energy is measured by enthalpy. Enthalpy is a measure of a system's overall heat content and is equal to the system's internal energy plus the sum of its volume and pressure.

Knowing whether q is endothermic or exothermic allows one to characterise the relationship between q and H. An endothermic reaction is one that absorbs heat and demonstrates that heat from the environment is used in the reaction, hence q>0 (positive). For the aforementioned equation, under constant pressure and temperature, if q is positive, then H will also be positive. In a similar manner, heat is transferred to the environment when it is released during an exothermic reaction. Thus, q=0 (negative). Therefore, if q is negative, H will also be negative.

Learn more about enthalpy change here :

brainly.com/question/1445358

#SPJ13

7 0
1 year ago
Other questions:
  • How is compound different from a mixture?
    10·2 answers
  • In any pure sample of CO2, the ratio of the mass of carbon to the mass of
    10·1 answer
  • What is the melting point of a 3L aqueous solution that contains 100g of MgCl2? kf H2O=1.86 rhoH2O=1gmL
    12·2 answers
  • Identify the limiting reactant in the reaction of nitrogen and hydrogen to form NH3 if 5.23 g of N2 and 5.52 g of H2 are combine
    7·1 answer
  • Use the drop-down menu to complete the statement. This is why they have similar Atoms of elements in the same group have the sam
    5·1 answer
  • In which of these situations should a fire blanket be used?
    10·2 answers
  • What is the symbol for neutrons
    7·1 answer
  • Where is the Oort cloud located
    6·1 answer
  • When 20.00 mL of an unknown monoprotic acid is titrated with 0.125 M NaOH, it takes 15.00 mL to reach the endpoint. What is the
    13·1 answer
  • An ice cube absorbs 353 cal of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!