TEKS 8.11abc

Q1. How many legs does a spider have?

• A) 2

• B) 8

• C) 3

• D) 13

• 2
• 6
• 10
• 16

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NGSS.MS-PS1-1

• 6
• 7
• 8
• 9

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NGSS.MS-PS1-1

An atom of which element is represented by this model?

• Carbon (C)

• Neon (Ne)

• Sodium (Na)

• Boron (B)

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NGSS.MS-PS1-1

A student is studying calcium, a highly reactive element that humans need for strong bones. Which characteristic of calcium is most closely related to its chemical reactivity?

• The 20 protons in each atom of calcium

• The 2 valence electrons in each atom of calcium

• The atomic mass of calcium, which is 40.078 amu

• The density of calcium, which is 1.54 g/cm3

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom consists of 12 protons, 12 electrons, and 12 neutrons. Which of the following can be used to identify the element?

• Neutrons

• Electrons

• Atomic number

• Atomic mass

An atom has 11 protons, 12 neutrons, and 11 electrons. What is the identity of the element?

• Sodium

• Titanium

• Vanadium

• Magnesium

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NGSS.MS-PS1-1

Which of the following best describes the role of chlorophyll in photosynthesis?

• A) It absorbs light energy for the process.

• B) It provides nutrients to the plant.

• C) It transports water within the plant.

• D) It protects the plant from herbivores.

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NGSS.MS-LS1-6

What is the primary function of the mitochondria in a cell?

• A) To store genetic information

• B) To produce energy in the form of ATP

• C) To synthesize proteins

• D) To regulate cell division

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NGSS.MS-LS1-2

Which of the following is a chemical property of an element?

• A) Melting point

• B) Density

• C) Reactivity with acid

• D) Color