Chemistry Review

Front

What is the composition of potassium sulfate, K2SO4?

Back

2 atoms of potassium, 1 atom of sulfur, and 4 atoms of oxygen.

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NGSS.MS-PS1-1

Front

What is an example of a physical change in the kitchen?

Back

Melting butter.

Tags

NGSS.MS-PS1-4

Front

How many atoms of oxygen are in a molecule of glucose, C6H12O6?

Back

6.

Tags

NGSS.MS-PS1-1

Front

What characteristic of an element determines its placement in the periodic table?

Back

Number of protons.

Front

What conclusion can be drawn from observing lithium floating and making a buzzing sound in water?

Back

A chemical change took place.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5