Kinchler - TCAP - 7th - Atoms, Periodic Table, Matter

The chemical formula for the sugar maltose is shown. According to the chemical formula, how many atoms are in one molecule of maltose? (a)  

• 45
• 1
• 3
• 2,904

Tags

NGSS.MS-PS1-1

A student is trying to prove that air has mass and is made up of atoms. Which experiment should the student perform?

• take the mass of a soccer ball before and after it has been inflated

• use a thermometer to take the classroom's temperature for one week

• go outside and record the speed of the wind

• attempt to capture air into a large plastic bag

Tags

NGSS.MS-PS1-1

A description of a reaction is shown.

Reactive sodium (solid) + Poisonous chlorine (gas) -> Non-toxic sodium chloride (solid)

Which statement best explains this reaction?

• Sodium and chlorine gas chemically formed a different substance.

• Chlorine gas was released when the sodium dissolved in water.

• Sodium heated the chlorine gas causing it to rearrange.

• Chlorine gas turned solid when it was cooled by the sodium.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which best describes a chemical change?

• an ice cube melting into water

• dry wood burning and producing ash

• a pencil that is broken in half

• steam produced by boiling water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The diagram shows the gases inhaled and exhaled during breathing. Which best identifies the substances shown in this diagram?

• O₂ is an element and CO₂ is a compound

• O₂ is a compound and CO₂ is an element

• Both O₂ and CO₂ are elements

• Both O₂ and CO₂ are compounds

Tags

NGSS.MS-PS1-2

The table shows the chemical formula of several substances. Which substances in the table are elements? (a)  

• Nitrogen and Oxygen
• Carbon Dioxide and Nitrogen
• Oxygen and Table salt
• Table salt and Water

Tags

NGSS.MS-PS1-1

Which procedure will result in the formation of a new compound?

• combining powder with water to make tea

• combining lettuce with dressing to make a salad

• combining vinegar with baking soda to make bubbles

• combining one colored liquid with another to make a new color

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The particles in a substance are moving at a very high rate of speed and colliding with each other. Which of these best demonstrates this type of particle motion? (a)  

• boiling water
• crushing an ice cube
• tearing a sheet of paper
• filling a glass of chocolate milk

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Mercury is the only metal that is a liquid at 25^o C. Which of these best describes how mercury particles are different from the particles of most metals at 25^o C?

• Mercury particles are farther apart and move more slowly.

• Mercury particles are farther apart and move more quickly.

• Mercury particles are closer together and move more slowly.

• Mercury particles are closer together and move more quickly.

Tags

NGSS.MS-PS1-4

A substance is characterized by the following:

* Its particles are held together by strong forces

* Its particles are densely packed together

* Its particles vibrate constantly but cannot move from one place to another

• a solid

• a liquid

• a gas

• an element

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4