Reference the photo of water droplets hanging from pine needles. Which statement correctly describes the forces acting on the droplets of water?

Cohesion causes the water molecules to stick together, forming a droplet. Adhesion causes the water to stick to the pine needle, preventing droplets from falling off.

Adhesion and cohesion cause the water molecules to stick together, forming a droplet. Adhesion causes the water to stick to the pine needle, preventing droplets from falling off.

Adhesion causes the water molecules to stick together, forming a droplet. Cohesion causes the water to stick to the pine needle, preventing droplets from falling off.

Cohesion causes the water molecules to stick together, forming a droplet. Adhesion and cohesion cause the water to stick to the pine needle, preventing droplets from falling off.

Water is transported against gravity from the roots of a tree up into the leaves. The water travels up the tree in tubes called xylem. Which of the following description best explains transport in plants?

Cohesion keeps the water molecules together. Adhesion pulls the water molecules to other molecules such as the xylem.

Adhesion keeps the water molecules together. Cohesion pulls the water molecules to other molecules such as the xylem.

Cohesion keeps the water molecules together. Surface tension pulls the water molecules to other molecules such the xylem.

Surface tension keeps the water molecules together. Adhesion pulls the water molecules to other molecules such the xylem.

Which of the following statements are correct based on the pH scale.

Stomach acid is the most acidic.

Black coffee is more acidic than baking soda.

Soda pop is more basic than sea water.

Baking soda has a pH of 9, which is acidic

Which of the following statements are false about pH?

Pure water is neutral on the pH scale.

Which can change/decrease the solubility of a solid in a liquid?

decreasing the temperature of the solution

increasing the temperature of the solution

A chemist is investigating the effect of temperature and stirring on the rate of dissolution of a solid. She places 10g of the solid in each test tube and places the test tubes in the conditions summarized in the following table. She then records how long it takes for the solid to dissolve. What can you conclude from these results?

Higher temperature and stirring both affect the rate of dissolution, but temperature has a stronger effect.

Higher temperature and stirring both affect the rate of dissolution, but stirring has a stronger effect.

Higher temperature and stirring both affect the rate of dissolution about the same amount.

Higher temperatures increase the rate of dissolution and stirring has no effect.

Which would decrease a material's thermal energy?

moving the material to a location where the temperature is lower

increasing the temperature of the material

increasing the kinetic energy of the particles that make up the material

During which phase does water have the most kinetic energy?

released as water vapor from a heated pot (gas)

boiling as a liquid in a heated pot

At higher temperatures

particles in an have less energy

particles are closer to each other

Unit 1 Review

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Unit 1 Review

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS1-4, MS-PS1-1, MS-LS2-3

Standards-aligned

Brittany Lara

Used 4+ times

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36 questions

Show all answers

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which are elements?

CO2

H2O

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which are compounds?

HCl

HNO3

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which box represents a liquid?

1st

2nd

3rd

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which sample represents a solid?

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

There are three common states of matter in which elements can exist. Most elements can exist in each of these states, depending on conditions.
What is the correct order of the amount of kinetic energy an atom has in these states, from least to greatest?

gas<liquid<solid

liquid<gas<solid

solid<liquid<gas

solid<gas<liquid

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does this picture represent?

Element

Compound

Homogeneous Mixture

Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does this picture represent?

Element

Compound

Homogeneous Mixture

Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

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Unit 1 Review

36 questions

Which are elements?

Which are compounds?

Which box represents a liquid?

Which sample represents a solid?

There are three common states of matter in which elements can exist. Most elements can exist in each of these states, depending on conditions.What is the correct order of the amount of kinetic energy an atom has in these states, from least to greatest?

What does this picture represent?

What does this picture represent?

What does this picture represent?

What does this picture represent?

What does this picture represent?

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There are three common states of matter in which elements can exist. Most elements can exist in each of these states, depending on conditions.
What is the correct order of the amount of kinetic energy an atom has in these states, from least to greatest?