Biology Middle School

What do these two changes have in common?

saliva breaking down a piece of bread

a penny tarnishing

Select all that apply.

both are caused by heating
both are chemical changes
both conserve mass
both are changes of state

What Do These Two Changes Have In Common?saliva Breaking Down A Piece Of Breada Penny TarnishingSelect

Answers

Answer 1

Answer: both are changes of state and both are changes of state

Explanation:

.

Answer 2

The two changes like the Saliva breaking down a piece of bread and a penny tarnishing involves chemical change. Thus, the correct option for this question is B.

What do you mean by Chemical change?

A Chemical change may be defined as a type of change that significantly involves the production of new substances from old ones by combining each other with different properties.

The action of saliva is stimulated by the action of the enzyme salivary amylase which hydrolyzed the starch into maltose, a disaccharide. A penny tarnishing involves the dissolution of copper oxide in a mixture of weak acid and table salt.

Therefore, the given two changes have in common that both are chemical changes. Thus, the correct option for this question is B.

To learn more about Chemical changes, refer to the link:

https://brainly.com/question/783768

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Related Questions

*by my profile its actually not biology cause it didn'*t have science subject*


Explain how crustal deformation builds land forms.

A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.

B. When wind and rain slowly wear away rock, they leave behind new looking land forms.

C. When sediments are laid down over vast areas the forces involved create rock over a very long period of time.

D. When two tectonic plates slide away from each other the inner liquid layer of the mantle comes to the surface as lava and creates new islands.

Answers

Answer:

A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.

Explanation:

It is true

How is information passed between neurons in the body?
A. through impulses
B. through motor neurons
C. through interneurons
D. through sensory neurons​

Answers

Answer:

The place where the axon of one neuron meets the dendrite of another is called a synapse. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. Neurotransmitters bind to the membrane of the dendrite. The binding allows the nerve impulse to travel through the receiving neuron.

Explanation:

Answer:

D. sensory neurons

What is the difference between an endoskeleton and a exoskeleton? What types of animals have each?

Answers

Answer:

an endoskeleton is a skeleton on the inside of a living creature. look at endo like enter, its on the inside! an exoskeleton is on the outside of a living creature. think of exo as exit, its on the outside! animals with endoskeletons are like dogs, cats, fish, and raccoons. animals with exoskeletons are like spiders, ants, crabs, and snails.

please give brainliest :)

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