DA review 8.5ABCDE

Which of the following best describes a proton?

• It has a positive charge and the same mass as an electron

• It has a positive charge and the same mass as an neutron

• It has a negative charge and the same mass as an electron

• It has a neutral charge and the same mass as an neutron

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

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NGSS.MS-PS1-1

Most of the mass of an atom is contained here.

• electron orbitals 
• nucleus
• shells
• atomic #

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NGSS.MS-PS1-1

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• cybertron

Look at the column, taken from the periodic table. Which of the following statements is correct for the elements shown?

• Lithium has 6.9 protons.

• Lithium has the least number of protons.

• Sodium has the most number of protons.

• Potassium has 39.1 protons.

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NGSS.MS-PS1-1

An atom has 12 protons, 14 neutrons, and 12 electrons. What is the atomic number of this element?

• 24

• 26

• 12

• 38

The picture shows part of the periodic table. Which pair of elements are in the same period?

• La and Ru

• Ra and Sg

• Y and Os

• K and Mg

How many atoms are represented in the reactants in the equation?

• 6

• 7

• 4

• 5

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

• H₃PO₄

• H₂SO₄

• HCIO₃

• H₂O

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NGSS.MS-PS1-1

How many atoms of oxygen are in a molecule of glucose (C₆H₁₂O₆)?

• 4

• 6

• 12

• 24

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NGSS.MS-PS1-1