Determine whether each statement below is true or false to complete the table.

Question

True False
The nucleus of an atom is found in the atom's center.

The nucleus of an atom contains at least one proton.

A neutron has a positive electrical charge.

Most of an atoms mass is found in protons and neutrons.

Answer 1

Here are the determinations for each statement:

1. The nucleus of an atom is found in the atom's center.
   True

2. The nucleus of an atom contains at least one proton.
   True (Note: Most atoms have at least one proton in their nucleus, but there are some isotopes like hydrogen-1 that have only one proton.)

3. A neutron has a positive electrical charge.
   False (Neutrons are electrically neutral.)

4. Most of an atom's mass is found in protons and neutrons.
   True (Protons and neutrons are the primary contributors to an atom's mass, while electrons contribute very little due to their much smaller mass.)

So, the completed table would look like:

| Statement | True | False | |-----------------------------------------------------------------------------|-------|-------| | The nucleus of an atom is found in the atom's center. | True | | | The nucleus of an atom contains at least one proton. | True | | | A neutron has a positive electrical charge. | | False | | Most of an atom's mass is found in protons and neutrons. | True | |

Answer 2

Which of the following statements best describes the periodic table?(1 point)
Responses

A chart that organizes elements based on their atomic number.
A chart that organizes elements based on their atomic number.

A chart that lists elements in alphabetical order.
A chart that lists elements in alphabetical order.

A chart that groups elements based on their melting points.
A chart that groups elements based on their melting points.

A chart that shows the number of electrons in each element.

Answer 3

The statement that best describes the periodic table is:

A chart that organizes elements based on their atomic number.

This is the fundamental characteristic of the periodic table, as elements are arranged in order of increasing atomic number, which corresponds to the number of protons in each element's nucleus.

Answer 4

Which of the following is a physical property of matter?(1 point)
Responses

Ability to rust
Ability to rust

Ability to burn
Ability to burn

Ability to conduct electricity
Ability to conduct electricity

Ability to react with water

Answer 5

The statement that describes a physical property of matter is:

Ability to conduct electricity.

The other options (ability to rust, ability to burn, and ability to react with water) are chemical properties, as they pertain to the substance's reactivity or its change in composition during a chemical reaction.

Answer 6

The chemical reaction that produces soap is called saponification. During one type of saponification, oil and sodium hydroxide undergo a chemical change to produce glycerol and soap. As a result of this reaction, the soap has different properties than the oil and sodium hydroxide. Some of these properties are what give soap its cleaning ability. For each statement below, choose whether it is true or false. (1 point)
True False
A chemical change occurs during saponification.

Soap is a reactant of the saponification reaction.

Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.

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Answer 7

Here are the determinations for each statement regarding saponification:

1. A chemical change occurs during saponification.
   True (Saponification is a chemical reaction where the components change into new substances.)

2. Soap is a reactant of the saponification reaction.
   False (Soap is a product of the saponification reaction, not a reactant.)

3. Together, the products of a chemical reaction have the same arrangement of atoms as the reactants.
   False (In a chemical reaction, atoms are rearranged to form new substances, so the arrangement of atoms in the products differs from that in the reactants.)

So the completed responses would look like:

| Statement | True | False | |---------------------------------------------------------------------|-------|-------| | A chemical change occurs during saponification. | True | | | Soap is a reactant of the saponification reaction. | | False | | Together, the products of a chemical reaction have the same arrangement of atoms as the reactants. | | False |

Answer 8

What happens to the pH of a solution when it becomes more acidic?(1 point)
Responses

The pH increases.
The pH increases.

The pH decreases.
The pH decreases.

The pH remains the same.
The pH remains the same.

The pH becomes neutral.

Answer 9

When a solution becomes more acidic, the pH decreases.

So the correct response is:

The pH decreases.

Answer 10

What is the significance of atoms in the formation of compounds?(1 point)
Responses

Atoms are the smallest particles of matter.
Atoms are the smallest particles of matter.

Atoms determine the color of compounds.
Atoms determine the color of compounds.

Atoms provide energy to compounds.
Atoms provide energy to compounds.

Atoms combine to form compounds.
Atoms combine to form compounds.

Answer 11

The correct response regarding the significance of atoms in the formation of compounds is:

Atoms combine to form compounds.

This statement accurately reflects the role of atoms in the creation of compounds, as compounds are formed when different atoms bond together.