BiWeekly 3 Review

Hey science explorers! Imagine you're on a quest with Mason and Henry to uncover the secrets of the periodic table. You've stumbled upon the element magnesium (Mg), known for its fiery personality and tendency to form ions. Can you help Mason and Henry identify two other elements that form ions with the same charge as magnesium ions?

• beryllium (Be)

• calcium (Ca)

• oxygen (O)

• potassium (K)

• sodium (Na)

Sophia and Liam are in a science showdown! Sophia made a table to compare the properties of metals and nonmetals, but she made a mistake. Can you help Liam spot the error in Sophia's table?

• Most metals have low melting points, and most nonmetals have high melting points.

• Most metals are poor conductors, and most nonmetals are good conductors.

• Most metals are malleable, and most nonmetals are not malleable.

• Most metals are not hard, and most nonmetals are hard.

Isla and Arjun are in a science class, and they are curious about ions. Can you help them figure out what is true about a positively charged ion?

• It is formed when an atom loses electrons.

• It is usually a non-metallic element.

• It has more electrons than protons.

• It is formed when an atom gains protons.

During a lively science class, Sophia and Isla are debating: How are most of the elements on the periodic table classified?

• nonmetals

• noble gases

• metalloids

• metals

Hey science enthusiasts! Can you help Aria figure out why noble gases are like the cool kids who don't mingle much with other elements?

• because they have more protons than other elements

• because they have fewer neutrons than other elements

• because they have a full outer shell of valence electrons

• because they have a single valence electron in their outer shell

Imagine you're in a science class with Maya, Olivia, and Aria. How did Mendeleev cleverly arrange the elements in his periodic table to impress his classmates?

• in order of increasing atomic number

• in order of increasing mass number

• in order of increasing ionization energy

• in order of increasing atomic mass

During a lively science class, Scarlett, Abigail, and Maya are debating: Which of these elements is the least reactive?

• sodium

• krypton

• chlorine

• aluminum

Hey Isla, can you guess what all the elements in the same column of the periodic table have in common?

• density

• atomic mass

• physical properties

• number of valence electrons

Charlotte and Harper are on a quest to discover why the shape of water transforms during a state change. The magical model below reveals how water morphs as it melts. Which question could BEST help them understand why the shape of water changes when it turns from a solid to a liquid?

• How can the arrangement of the particles be described?

• Which model has the most water molecules?

• Which model has the largest water molecules?

• How can the color of the particles be described?

Tags

NGSS.MS-PS1-4

Imagine you're a molecule at a party, and the party is winding down. How does your dance change as the party goes from a lively liquid bash to a chilled-out solid gathering?

• You gain energy, and your dance moves get wilder.

• You lose energy, but your dance moves get wilder.

• You gain energy, but your dance moves slow down.

• You lose energy, and your dance moves slow down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5