Quiz about REVIEW MATTER and ENERGY

Question 1

How many Mg are present in 2Mg + O₂ = 2MgO

Accepted Answer

4

Answer

0

Answer

1

Answer

2

Question 2

Which of the following is the oxygen molecule?

2Mg + O₂ = 2MgO

Accepted Answer

O2

Answer

2Mg

Answer

2MgO

Question 3

Which of the following is most affected by temperature

Accepted Answer

Cup 2: Crushed salt, hot water stirring slowly

Answer

Cup 1: coarse salt, cold water, no stirring

Answer

Cup 3 : table salt, room temp water, no stirring

Answer

Cup 4: Crushed salt, cold water stirred quickly

Answer

Cup 5: table salt, warm water, stirred slowly

Question 4

Which of the following is most affected by agitation

Accepted Answer

Cup 4: Crushed salt, cold water stirred quickly

Answer

Cup 1: coarse salt, cold water, no stirring

Answer

Cup 2: Crushed salt, hot water stirring slowly

Answer

Cup 3 : table salt, room temp water, no stirring

Answer

Cup 5: table salt, warm water, stirred slowly

Question 5

Which of the following is most affected by surface area

Accepted Answer

Cup 3 : table salt, room temp water, no stirring

Answer

Cup 1: coarse salt, cold water, no stirring

Answer

Cup 2: Crushed salt, hot water stirring slowly

Answer

Cup 4: Crushed salt, cold water stirred quickly

Answer

Cup 5: table salt, warm water, stirred slowly

Question 6

Which of the following demonstrates all three slowing factors

Accepted Answer

Cup 1: coarse salt, cold water, no stirring

Answer

Cup 2: Crushed salt, hot water stirring slowly

Answer

Cup 3 : table salt, room temp water, no stirring

Answer

Cup 4: Crushed salt, cold water stirred quickly

Answer

Cup 5: table salt, warm water, stirred slowly

Question 7

Which of the following demonstrates moderate improvements in all factors

Accepted Answer

Cup 5: table salt, warm water, stirred slowly

Answer

Cup 1: coarse salt, cold water, no stirring

Answer

Cup 2: Crushed salt, hot water stirring slowly

Answer

Cup 3 : table salt, room temp water, no stirring

Answer

Cup 4: Crushed salt, cold water stirred quickly

Question 8

Which of the following is TRUE of the two gases ozone (O₃) and oxygen gas (O₂).

Accepted Answer

They are both Molecules

Answer

They are both Elements

Answer

They are both Compounds

Question 9

Which statements are characteristics of an element?

Accepted Answer

II, III, IV

Answer

I, III

Answer

II, IV

Answer

I, IV, II

Question 10

Which statements are characteristics of a compound?

Accepted Answer

I, II, IV

Answer

I, III

Answer

ONLY IV

Answer

ONLY I

Question 11

What is the substance that is dissolved to form a solution?

Accepted Answer

solute

Answer

solution

Answer

solvent

Question 12

What is the substance that is doing the dissolving to form a solution?

Accepted Answer

solvent

Answer

solute

Answer

solution

Question 13

What is the substance that is formed when you dissolve a solute in a solvent?

Accepted Answer

solution

Answer

solute

Answer

solvent

Question 14

Breaks the solute into smaller particles, exposing more of the solute to the solvent

Accepted Answer

Increasing Surface Area

Answer

Increasing Temperature

Answer

Agitation

Question 15

Helps distribute solute particles evenly throughout the solvent, promoting more contact between solute and solvent particles

Accepted Answer

Agitation

Answer

Increasing Temperature

Answer

Increasing Surface Area

Question 16

Increases kinetic energy, causing molecules to move faster and interact more frequently

Accepted Answer

Increasing Temperature

Answer

Agitation

Answer

Increasing Surface Area

Question 17

how does a physical change differ from a chemical change?

Accepted Answer

Physical changes alter the properties with out changing the identity of the substance. Chemical changes form a new substance with different properties

Answer

Physical changes form new substances with the same properties. Chemical changes form new substances with different properties

Answer

Physical changes form new substances with different properties. Chemical changes alter the properties without changing the identity of the substance

Answer

Physical changes alter the properties changing the identity of the substance. Chemical changes from a new substance with the same properties

Question 18

Al₂(SO₄)₃

How many atoms of each element are in the chemical formula for aluminum sulfate shown above.

Accepted Answer

2 aluminum, 3 sulfur, 12 oxygen

Answer

2 aluminum, 1 sulfur, 43 oxygen

Answer

6 aluminum, 3 sulfur , 4 oxygen

Answer

2 aluminum, 1 sulfur, 4 oxygen

Question 19

Student 1 claims that whenever the color of a substance changes, a chemical change has occurred.

Student 2 claims that food coloring can change the color of a substance without causing a chemical change.

To test their claims, the students add red food coloring to a glass of water. The students observe that the clear water turns a light pink color. Their teacher then runs a test to show that the pink solution contains both water molecules and food-coloring molecules.

Based on these findings, which student is correct?

Accepted Answer

Student 2, because no new substance was formed when there was a color change

Answer

Student 2, because the red food coloring caused the water to change to a pink color

Answer

Student 1, because the state of matter changed when the food coloring was added

Answer

Student 1, because the food-coloring molecules were found in the pink solution

Question 20

Which are examples of Physical Change (2 answers

Accepted Answer

Scissors cutting a piece of paper

Accepted Answer

Water condensing on the side of a window

Answer

Natural gas burning to heat a home

Answer

An enzyme breaking down food in the mouth

Answer

Corroding metal

Question 21

Which are examples of Chemical Change (3 answers)

Accepted Answer

Natural gas burning to heat a home

Accepted Answer

An enzyme breaking down food in the mouth

Accepted Answer

Corroding metal

Answer

Scissors cutting a piece of paper

Answer

Water condensing on the side of a window

Question 22

Which of the following examples includes only chemical changes that occur in the digestive process?

Accepted Answer

Reaction of saliva, stomach acid, bile, and pancreatic juices with food

Answer

Recycling of water from dissolved food back into the body

Answer

Absorption of nutrients by villi in the small intestines

Answer

Chewing and swallowing food

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