All categories

3 years ago

Is baking cookies a chemical or physical change

Chemistry

2 answers:

Natalija [7]3 years ago

6 0

Answer: Its a chemical change because the materials are mix to make the dough

I hope that I help you.

k0ka [10]3 years ago

5 0

Answer:

chemical change

Explanation:

When the batter heats up, the sugar breaks down into glucose and fructose, which forms a polymer chain, giving the cookie its light brown crust. When sodium baking soda heats up, it causes a chemical reaction.

You might be interested in

Câu 15: Khử hỗn hợp X gồm CuO, FeO bằng khí CO sau một thời gian thu được 14,4 gam hỗn hợp rắn A (4 chất) và thoát ra 3,36 lít (

Nuetrik [128]

Answer:

Cô cạn dung dịch B thu được bao nhiêu gam muối khan.

3 0

3 years ago

Read 2 more answers

Two identical containers, one red and one yellow, are inflated with different gases at the same volume and pressure. Both contai

Evgen [1.6K]

Answer:

Explanation:

Here we're dealing with the root mean square velocity of gases. We'll provide the formula in order to calculate the root mean square velocity of a gas:

$v_{rms}=\sqrt{\frac{3RT}{M}}$

Here:

$R = 8.314 \frac{J}{K mol}$ is the ideal gas law constant;

$T$ is the absolute temperature in K;

$M$ is the molar mass of a compound in kg/mol.

We know that the gas from the red container is 4 times faster, as it takes 4 times as long for the yellow container to leak out, this means:

$\frac{v_{rms, red}}{v_{rms, yellow}} = 4$

We also know that the temperature of the red container is twice as large:

$\frac{T_{red}}{T_{yellow}} = 2$

Write the ratio of the velocities and substitute the variables:

$\frac{v_{rms, red}}{v_{rms, yellow}}=\frac{\sqrt{\frac{3RT_{red}}{M_{red}}}}{\sqrt{\frac{3RT_{yellow}}{M_{yellow}}}}=4$

Then:

$\frac{\sqrt{\frac{3RT_{red}}{M_{red}}}}{\sqrt{\frac{3RT_{yellow}}{M_{yellow}}}}=\sqrt{\frac{3RT_{red}}{M_{red}}\cdot \frac{M_{yellow}}{3RT_{yellow}}}=\sqrt{\frac{T_{red}}{T_{yellow}}\cdot \frac{M_{yellow}}{M_{red}}}=4$

From here:

$16 = \frac{T_{red}}{T_{yellow}}\cdot \frac{M_{yellow}}{M_{red}}$

Then:

$\frac{M_{yellow}}{M_{red}} = \frac{16}{\frac{T_{red}}{T_{yellow}}} = \frac{16}{2} = 8$

5 0

3 years ago

A Cobalt (Co) atom has a mass number of 60. Its atomic number is 27. How many neutrons does the cobalt atom have?

Roman55 [17]

Answer:

33 Neutrons

Explanation:

Atomic Mass = # of Protons + # of Neutrons

Atomic Number = Proton count

Atomic Mass of Co = 27 Protons + x Neutrons

60 = 27 + x

x = 33

6 0

4 years ago

Plz help, science open answer

aleksandrvk [35]

Scientists are cool

7 0

3 years ago

C2H4(g) + H2(g) mc030-1.jpg C2H6(g) Which change would likely cause the greatest increase in the rate of the reaction?

Vinil7 [7]

The reaction is a hydrogenation reaction of an alkene, and its equation is:
C₂H₄(g) + H₂(g) → C₂H₆(g)
Therefore, this reaction can be sped up just as any other irreversible reaction may have its rate increased, by increasing temperature and pressure to increase the effective collisions of molecules.

5 0

4 years ago

Read 2 more answers