How are elements ordered in the modern periodic table?

by alphabetical order of element symbols

Which statement best explains how periods on the periodic table are organized?

increasing atomic number from left to right

increasing number of neutrons from left to right

decreasing number of electrons from left to right

decreasing atomic mass number from left to right

Which best explains how the periodic table is used to identify properties of elements?

by the group in which the elements are located

by the color and shape of the elements

by the number of electrons in the elements

A scientist placed a sample of lithium into a container of water. The scientist observed the lithium floating and making a buzzing sound as gas bubbles were forming around it. Which conclusion is BEST supported by this observation?

The lithium was dissolved by the water

A beaker contains a sample of water with a mass of 325 grams. The water in the beaker is boiled and weighed again after it cools. The new mass of the water is 305 grams. In this example of the conservation of matter in physical changes,

the mass of the water was 305 grams and the mass of the water vapor was 20 grams.

the mass is less after it cools because water has less mass as a gas.

the process of boiling destroyed 20 grams of the water and left 305 grams of water.

the heat energy created by boiling water makes up the rest of the mass.

A chemical change happens when

electricity flows through a wire

Which statement is NOT accurate describing the element krypton?

The element has 6 valence electrons

The element has properties similar to neon

Hope Physical Science NC Check In Review

Authored by Jason White

Chemistry

8th Grade

NGSS covered

Used 3+ times

Hope Physical Science NC Check In Review

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

Content View
Student View

50 questions

Show all answers

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A(n) ___________ is a pure substance that cannot be broken down.

element

mixture

compound

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An element is identified by

its number of protons.

the atomic mass.

the type of charge.

its number of isotopes.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Water (H₂O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?

as a compound because the water (H₂O) and table salt (NaCl) arechemically combined

as a compound because the water (H₂O) and table salt (NaCl) form anew pure substance

as a mixture because the water (H₂O) can be evaporated andphysically separated from the table salt (NaCl)

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?

12 atoms of carbon (C)

6 atoms of carbon (C)

3 atoms of carbon (C)

2 atoms of carbon (C)

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?

A physical change occurred.

Atoms involved in the reaction lost mass.

Precipitates were created in the new solution.

Gases were released to the atmosphere.

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does a balanced chemical equation satisfy the Law of Conservation of Mass?

During a chemical reaction, the total amount of matter stays the same.

During a chemical reaction, matter is destroyed.

During a chemical reaction, one or more new substances are formed.

During a chemical reaction, the total number of atoms increases.

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What coefficient for O₂ demonstrates the law of conservation of mass?
CH₄(g) + __O₂(g) → CO₂(g) + 2H₂O(g)

Tags

NGSS.MS-PS1-5

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Microsoft

or continue with

Facebook

Apple

Others

By signing up, you agree to our Terms of Service & Privacy Policy

Already have an account?

Popular Resources on Wayground

10 questions

Ice Breaker Trivia: Food from Around the World

Quiz

•

3rd - 12th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

7 questions

Copy of How to Report Bullying 6-12 Grade - Bullying Lesson Series 3

Presentation

•

2nd Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

Discover more resources for Chemistry

20 questions

Chemical Reactions

Quiz

•

8th Grade

18 questions

3.2 Ionic Bonding Review

Quiz

•

8th Grade

20 questions

Physical or Chemical Change/Phases

Quiz

•

8th Grade - University

15 questions

Balancing Chemical Equations

Quiz

•

8th Grade

20 questions

Counting Atoms

Quiz

•

8th Grade

20 questions

States of Matter

Quiz

•

8th Grade

20 questions

Counting Atoms Practice

Quiz

•

8th Grade

10 questions

Exploring Ionic and Covalent Bonding Concepts

Interactive video

•

6th - 10th Grade

Hope Physical Science NC Check In Review

A(n) ___________ is a pure substance that cannot be broken down.

An element is identified by

Water (H₂O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?

Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?

How does a balanced chemical equation satisfy the Law of Conservation of Mass?

What coefficient for O₂ demonstrates the law of conservation of mass?
CH₄(g) + __O₂(g) → CO₂(g) + 2H₂O(g)

The chemical formula for baking soda is NaHCO₃. How many different elements make up baking soda?

How are elements ordered in the modern periodic table?

What are the columns of the periodic table called?

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Chemistry

Hope Physical Science NC Check In Review

A(n) ___________ is a pure substance that cannot be broken down.

An element is identified by

Water (H2O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?

Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?

How does a balanced chemical equation satisfy the Law of Conservation of Mass?

What coefficient for O2 demonstrates the law of conservation of mass?CH4(g) + __O2(g) → CO2(g) + 2H2O(g)

The chemical formula for baking soda is NaHCO3. How many different elements make up baking soda?

How are elements ordered in the modern periodic table?

What are the columns of the periodic table called?

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Chemistry

Water (H₂O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?

What coefficient for O₂ demonstrates the law of conservation of mass?
CH₄(g) + __O₂(g) → CO₂(g) + 2H₂O(g)

The chemical formula for baking soda is NaHCO₃. How many different elements make up baking soda?