Atoms and Molecules Review

Which properties of gold makes it suitable for making electric wires?

• Good conductor of electricity

• Malleable

• Ductile

• Good conductor of heat

Which type of matter consists of 2 or more substances that are chemically combined?

• atom

• mixture

• element

• compound

Which of these items is made up of one or more molecules?

• Gold

• Salt

• Hydrogen

• Neon

Tags

NGSS.MS-PS1-1

A substance that can be easily separated is called a

• compound

• base

• mixture

• elements

Identify a metal which is a poor conductor of heat.

• Argon

• Sodium

• Aluminum

• Iron

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Nick is researching why baking powder is a common baking ingredient. He learns that baking powder contains tartaric acid and sodium hydrogen carbonate. He also learns that when water is added to cake ingredients, a reaction occurs. It causes bubbles to form that make the cake rise. What gas is in the bubbles, and why do they form?

• Carbon dioxide gas forms because an acid and a base react.

• Carbon dioxide gas forms because an acid and a carbonate react.

• Hydrogen gas forms because an acid and a base react.

• Hydrogen gas forms because an acid and a metal react.

Tags

NGSS.MS-PS1-2

There are 118 pure substances that cannot be broken down and are found on the periodic table. These are called ___________.

A student with the flu was given a medication that tasted bitter. Other than taste, which other tests would confirm which type of compound was in the medication? Choose the two statements that apply.

• It reacts with metals

• It turns blue litmus paper red

• It feels slippery

• It turns red litmus paper blue

Which atomic particle has no charge?

• neutron

• proton

• electron

• nucleus

Heidi is using the periodic table to make predictions about chemical reactions. She knows that sodium is a reactive metal. Which element is most likely to form a molecule with sodium that includes one ionic bond?

• Aluminum (Al)

• Oxygen (O)

• Potassium (K)

• Fluorine (F)

Tags

NGSS.MS-PS1-2