SPS2

Noah, Lily, and Aiden are in a chemistry class. Their teacher asks, 'Which of the following are most directly involved in chemical bonding during a chemical reaction in a real-world scenario like the formation of water from hydrogen and oxygen?'

• protons

• neutrons

• alpha particles

• valence electrons

Tags

SPS2a

Aria and David are studying chemistry and they come across the elements magnesium (Mg) and bromine (Br) in the Periodic Table. Avery joins them and asks, 'What would be a characteristic of the compound MgBr₂ that we could observe if we had it in our lab?'.

• It has a high melting point.

• It is formed by covalent bonds.

• It is a gas at room temperature.

• It does not conduct electricity when dissolved in water.

Tags

SPS2a

Mia, Noah, and Maya are studying the structure of a methane molecule for their chemistry project. They are discussing the relationship between the carbon and hydrogen atoms in the methane molecule. Which statement correctly describes their discussion?

• They are held together by ionic bonds.

• They share electrons to form covalent bonds.

• They bond to each other since all are positively charged.

• They are attracted to each other because of neutrons.

Tags

SPS2a

Benjamin, Abigail, and Kai are working on a science project. They are testing different types of compounds to see which one is more likely to conduct electricity. Which type of compound should they test?

• Ionic compounds

• Covalent compounds

• Neither ionic nor covalent compounds

• Both ionic and covalent compounds

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SPS2a

List the steps of the scientific method

d

e

f

c

b

a

Conduct experiment

Ask a question

Communicate results

Analyze results

Draw conclusions

Form a hypothesis

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Abigail, Aiden, and Noah are studying chemistry. They come across a problem where they need to determine the formula when magnesium (Mg²⁺) and fluorine (F^-1) combine in an ionic bond. What would be the resulting formula?

• Mg₂F

• Mg₂F₂

• MgF

• MgF₂

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SPS2b

Charlotte, Oliver, and Benjamin are working on a chemistry project. They have a model of sodium and fluorine atoms. They want to change the model to represent an ionic bond between sodium and fluorine. How should they do it?

• move 7 electrons from the fluorine model to the sodium model

• move one electron from the fluorine model to the sodium model

• move one electron from the sodium model to the fluorine model

• Nothing. The model already shows an ionic bond.

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SPS2b

Liam, Kai, and Michael are working on a chemistry project where they have to identify compounds using IUPAC nomenclature rules. They come across a compound: K₂O. What should they correctly identify this compound as?

• potassium oxide

• dipotassium oxide

• potassium (I) oxide

• dipdipotassium monoxide

Tags

SPS2c

James, Avery, and Benjamin are in a chemistry class. Their teacher asks them to identify the chemical formula for Carbon Tetrafluoride. What should they answer?

• C₄F

• CF

• C₄F₄

• CF₄

Tags

SPS2c