Periodic Table

Grace, Abigail, and David are in a chemistry class discussing a real-world scenario. They are trying to determine the smallest unit of an element that retains all the properties of the element in a sample of water. Can you help them settle the debate?

• Proton

• Neutron

• Electron

• Atom

Tags

NGSS.MS-PS1-1

David, Nora, and Avery are working on a science project about atoms. They need to build a model of an atom's nucleus but are unsure about its composition. Can you help them figure out what particles make up the nucleus of an atom?

• Protons and Neutrons

• Protons and Electrons

• Neutrons and Electrons

• Protons, Neutrons, and Electrons

Tags

NGSS.MS-PS1-1

David, Zoe, and Ava are studying the structure of an atom for their chemistry project. They want to know where electrons move in an atom. Can you help them?

• Inside the nucleus

• In energy levels or shells outside the nucleus

• Between protons and neutrons

• In the valence shell

Anika, Avery, and Jackson are studying for their chemistry test. Anika says the atomic number of an element is the number of protons in the nucleus. Avery thinks it's the number of neutrons, and Jackson believes it's the number of electrons. Who is correct?

• Anika, because it's the number of protons in the nucleus

• Avery, because it's the number of neutrons in the nucleus

• Jackson, because it's the number of electrons in the nucleus

• None of them, because it's the total weight of an atom

Hey Grace, Noah and Oliver! Imagine you guys are building a house. The house represents an atom. Now, can you guys tell me what valence electrons would represent in this scenario?

• Are they like the foundation of the house, which is the innermost part?

• Or, are they like the roof of the house, which is the outermost part?

• Maybe, they are like the rooms in the house, which are in the center?

• Or, could they be like the windows of the house, which are on the outer shell?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Evelyn, Benjamin, and Arjun are in a chemistry lab. They are conducting an experiment to determine which group of elements reacts the most when exposed to a certain compound. They have narrowed it down to four groups. Can you help them identify the most reactive group?

• Group 1 Alkali Metals

• Group 17 Halogens

• Group 18 Noble Gases

• Group 14 Metalloids

Evelyn, Luna, and Zoe are working on a science project about the properties of metals. They are having a discussion about the characteristics of metals. Can you help them settle the debate?

• Luster, usually gases at room temperature, poor conductors of heat and electricity

• Luster, usually solid at room temperature, malleable, good conductors of heat and electricity

• Dull, brittle solids, poor conductors of heat and electricity

• Neither malleable nor ductile, good conductors of heat and electricity

Hey Aria, Grace, and Nora! Imagine you guys are on a treasure hunt in a science museum. You come across a giant model of the periodic table. Can you tell me where you would find the nonmetals on this model?

• To the left and below the stair-step line

• Above and to the right of the stair-step line

• On the stair-step line

• In the transition elements groups 3-12

Michael, Nora, and Kai are studying for their chemistry exam. They are discussing about the properties of different groups of elements. They are particularly interested in knowing: 'Which group of elements is usually inert or stable?'

• Group 1 Alkali Metals

• Group 17 Halogens

• Group 18 Noble Gases

• Group 14 Metalloids

Elijah, Kai, and Benjamin are working on a chemistry project about elements on the periodic table. They need to create a model of metalloids and are discussing their location on the periodic table. Can you help them identify where metalloids are located on the periodic table?

• To the left and below the stair-step line

• Above and to the right of the stair-step line

• On the stair-step line

• In the transition elements groups 3-12