Answer these questions, I dont need the explanation I just need the answers 1. Which process is an example of a physical change?

a. carrots are cut into small pieces and mixed into a salad.
b. a peanut butter sandwich is eaten and broken down by enzymes in the stomach.
c. sodium metal and chlorine gas are combined to form sodium chloride, or table salt.
d. sodium metal and water are combined to form a basic compound and a flammable gas.

2. which process is an example of a chemical change?

a. an iron nail rusting
b. bath water cooling while u take a bath
c. a piece of metal being heated until it expands
d. a glass window breaking when hit with a baseball

3. Nuclear reactions occur when the nuclei of two different atoms collide to produce products that are different form the starting substances. How is this similar to a chemical change?

a. A chemical change can easily be reversed
b. in a chemical change, mass can be created
c. in a chemical change, energy can be created
d. in a chemical change, a new substance forms

4. There are several differences between chemical and physical changes. Which process is an example of chemical change?

a. steam rising from a boiling pot of soup
b. a metal railing rusting in damp weather
c. alchohol evaporating from a cotton swab
d. a piece of wood shrinking as it dries out

5. Marco tears a piece of notebook paper into smaller pieces. Tearing paper into pieces is an example of what kind of change?

a. a change in mass
b. a physical change
c. a chemical change
d. a change in energy

6. A chemist is working with a liquid substance that tastes bitter, feels slippery, and conducts an electric current. Which of the following is the chemist most likely working with?

a. salt
b. a base
c. an acid
d. distilled water

7. How is salt formed during neutralization reaction?

a. a hydrogen ion reacts with a hydroxide ion.
b. an acid changes to a different state of matter.
c. a metal ion takes the place of the hydrogen of an acid.
d. the water molecule breaks into hydroxide and hydrogen ion

8. what happens to an acid when it dissolves in water?

A. it increases the number of hydroxide ions in water
b. it increases the number of hydrogen ions in water
c. it produces a salt that collects at the bottom of the container
d. it breaks water into individual atoms of hydrogen and oxygen

The equation below describes a neutralization reaction.

Base + Acid > Salt + ???

Which substance is missing from the product side of the equation?
a. water
b. oxygen
c. hydrogen ion
d. hydroxide ion

10. How is hydrochloric acid important to maintaining the health of the human body?

a. it Carrie's oxygen in the blood to where it is needed.
b. it breaks down food so that the body can obtain nutrients.
c. it removes wastes that are produced during normal processes
d. it kills pathogens so that the body can protect itself from disease.

I will give brainliest to whoever gives correct answers!​