Physical change

Biology

2 answers:

Dominik [7]2 years ago

6 0

Answer:

Explanation:

If it is just a physical change then we can instantly cross out B. and A. as they say in there that they become a new substance and that is not just a physical change. C. is not correct because they combine and there for make a new substance. That leaves D. which makes sense because a physical change would be a change in its size or something that doesn't change the material, this is like when you break a rock, it is now in pieces and smaller but it is still the same rock therefor it is a physical change.

love history [14]2 years ago

4 0

Answer:

Im pretty sure its D or A

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another.

You might be interested in

is the fluid portion of a blood sample that has been drawn in the presence of an anticoagulant compound.

Svetlanka [38]

Answer:

Plasma.

Explanation:

The main connective tissue of human body is blood. Blood mainly composed of the plasma and formed elements. Formed elements include white blood cell, red blood cells and platelets.

Blood plasma is present around 55% in composition. The blood plasma contains various coagulant factors, ions, proteins and chemicals. Plasma is the fluid portion of blood that needs to be drawn in presence of the anticoagulant compound.

Thus, the answer is plasma.

6 0

2 years ago

If a plant takes in 6 CO2 molecules and 6 H2O molecules in order to build one C6H12O6 molecule, what element will the plant have

lora16 [44]

Answer:

Oxygen (O2)

Explanation:

This question is describing photosynthesis which uses carbon dioxide and water as reactants in the presence of sunlight to synthesize sugar (glucose) and oxygen. The general equation is as follows:

6CO2 + 6H2O ---> C6H12O6 + 6O2

According to this question, a plant takes in 6CO2 molecules and 6H2O molecules in order to build one C6H12O6 molecule. Using the balanced equation above, the extra element is OXYGEN, which still needs to be released as a gas for the equation to be balanced i.e 6O2 molecules

6 0

2 years ago

At the height of ___________________, the amount of daylight hours are equal in both hemispheres.

kaheart [24]

I would assume it is choice b.
because in the summer there are more hours of light, and n the winter there are less.

6 0

3 years ago

Read 2 more answers

What quantity can tell you whether a solution is acidic or basic?

Marta_Voda [28]

It is pH. If you have a pH of 0-6 it is a acidic. If you have a pH of 7 it is neutral. If you have a pH of 8 or above it is a base.

4 0