Which statement best describes the locations of the subatomic particles?

The protons and neutrons are in the nucleus, while the electrons are in the cloud outside the nucleus

The protons and electrons are found in the nucleus, while neutrons are in the cloud outside the nucleus

The neutrons are in the nucleus, while the protons and electrons are in the cloud outside the nucleus

The electrons and neutrons are in the nucleus, while the protons are in the cloud outside the nucleus

The atomic number tells you what?

both electrons and protons in an atom.

A positively charged subatomic particle

A negatively charged subatomic particle

A neutrally charged subatomic particle

The only subatomic particle located in the nucleus

What is a coefficient?

The large number to the left of a formula.

The small number on the right of the chemical symbol.

For an investigation a student poured a blue solution of CuSO 4 into a beaker. The student placed a shiny, silver-colored strip of zinc metal in the solution and observed the changes. The student inferred that a chemical reaction occurred. What evidence supports this inference?

A dark solid formed on the zinc metal.

The zinc metal remained silver-colored and shiny

The CuSO 4 solution turned blue when the zinc metal was added.

The chemical formula for glucose, a simple sugar, is C 6 H 12 O 6 . The formula for ethanol is C 2 H 6 O. What accounts for the differences in these compounds?

The ratio of the elements is different in ethanol than in glucose

The elements that make up glucose are different than the elements that make up ethanol

The chemical properties of the elements are different in glucose and ethanol

Glucose has more elements than the ethanol

Two clear colorless solutions were combined. The student observed that the temperature changed from 25 •C to 23 •C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?

The solutions reacted chemically

One of the original compounds came out of solution

Some of the water froze into ice crystals

Rapid evaporation of water occurred, leaving a solid

STAAR - Chemistry

Chemistry

8th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The mass of one proton is equal to the mass of one...

neutron

electron

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The mass of one proton is greater than the mass of one...

neutron

electron

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of the mass of an atom comes from what location?

nucleus

electron cloud

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What subatomic particle has no effect on the mass of the atom?

proton

neutron

electron

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which letter represents a proton?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which letter represents a neutron?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which letter represents an electron?

Tags

NGSS.MS-PS1-1

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STAAR - Chemistry

The mass of one proton is equal to the mass of one...

The mass of one proton is greater than the mass of one...

All of the mass of an atom comes from what location?

What subatomic particle has no effect on the mass of the atom?

Which letter represents a proton?

Which letter represents a neutron?

Which letter represents an electron?

Which letter represents the nucleus?

Which letter represents the electron cloud?

Using your Periodic Table, identify the element that is represented by this model.

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