8.P.1.4 Law of Conservation of Mass

Presentation

•

Science

•

8th Grade

•

Hard

•

NGSS

MS-PS1-5, MS-PS1-2

Standards-aligned

Kacy Smith

Used 6+ times

FREE Resource

9 Slides • 25 Questions

The North Carolina Essential Standards are linked here for your reference.

The quick reference guide for this portion of the EOG is below including standard and

description, approximate percentage of the EOG and approximate number of questions.

This is meant as a consolidated guide only using the resources provided by NCDPI.

Specific information is linked here.

The North Carolina Essential Standards are linked here for your reference.

The quick reference guide for this portion of the EOG is below including standard and

description, approximate percentage of the EOG and approximate number of questions.

This is meant as a consolidated guide only using the resources provided by NCDPI.

Specific information is linked here.

Multiple Choice

Which pair of elements has the most similar properties?

Li and B

I and Ca

K and He

N and P

Multiple Choice

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

Multiple Choice

Where are the most reactive metals located on the periodic table?

the uppermost complete row of the table

the rows at the bottom of the table connecting two section

the column at the far left side of the table

the second column from the right side of the table

Multiple Choice

Sodium reacts with water. Which element is most likely to have a similar effect to sodium if it is exposed to water?

carbon

oxygen

lithium

Multiple Choice

Which elements are most likely to react in the same manner in a chemical reaction?

elements in the same group

elements in the same period

elements with similar atomic masses

Multiple Choice

If an element has no electrons to share and is stable, what family is it found in?

alkali metals

noble gases

halogens

Multiple Choice

Why are certain elements placed into the same column on the periodic table?

They have the same number of protons in their nuclei.

They have the same number of electrons in their nuclei.

They have the same number of electrons in their outer energy level.

Multiple Choice

Which property is unique for each element?

mass number

atomic number

state of matter

Multiple Choice

Which subatomic particles determine the reactivity of groups of elements in the periodic table?

electrons

neutrons

protons

Multiple Choice

Where on the periodic table are you most likely to find elements that do not react with other elements?

group 1

group 17

group 18

Multiple Choice

Which elements would have similar properties to those of potassium?

lithium and sodium

bromine and krypton

calcium and scandium

Multiple Choice

Which element is in the same family as chlorine (Cl) and fluorine (F)?

hydrogen (H)

lithium (Li)

oxygen (O)

bromine (Br)

Multiple Choice

On the periodic table, in which group is the metalloid silicon found?

Group 3

Group 14

Group 15

Multiple Choice

A scientist creates a new synthetic element in a laboratory.
Where would the new element most likely be placed on the periodic table?

near the top

near the bottom

on the far left side

on the far right side

Multiple Choice

Which best describes a row of elements in the periodic table?

column

family

group

period

Multiple Choice

Which best describes how the current periodic table is arranged?

by atomic mass

by atomic number

in alphabetical order by element symbol

in numerical order by number of neutrons in the nucleus

Multiple Choice

Which is a property of metalloids?

the ability to be pulled into long wires

the ability to be hammered into sheets

the ability to be a liquid at room temperature

the ability to conduct electricity under certain conditions

Multiple Choice

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)

Multiple Choice

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.

Multiple Choice

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.

Multiple Choice

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

Multiple Choice

Which is best represented by the equation?
2Mg + O₂ → 2MgO

Law of Conservation of Energy

Law of Conservation of Mass

Law of Superposition

Multiple Choice

What is the importance of a closed container in a chemical reaction?

to observe the mass before and after the reaction occurs

to keep any materials from interfering with the reaction

to observe the loss of mass after the reaction occurs

Multiple Choice

Which best represents a balanced equation?

120 grams of carbon plus 20 grams of oxygen → 200 grams of carbondioxide

120 grams of carbon plus 50 grams of oxygen → 200 grams of carbondioxide

120 grams of carbon plus 80 grams of oxygen → 200 grams of carbondioxide

Multiple Choice

Which equation is balanced according to the Law of Conservation of Mass?

NaCl + Mg →
MgCl₂ + Na

2NaCl + Mg → MgCl₂ + Na

2NaCl + Mg →
MgCl₂ + 2Na

The North Carolina Essential Standards are linked here for your reference.

The quick reference guide for this portion of the EOG is below including standard and

description, approximate percentage of the EOG and approximate number of questions.

This is meant as a consolidated guide only using the resources provided by NCDPI.

Specific information is linked here.

Show answer

Auto Play

Slide 1 / 34

SLIDE

Similar Resources on Wayground

27 questions

Ecosystems

Presentation

•

8th Grade

26 questions

Volcanoes

Presentation

•

8th Grade

29 questions

The Sun

Presentation

•

8th Grade

25 questions

Isotopes

Presentation

•

8th Grade

25 questions

Newton's 3rd Law of Motion

Presentation

•

8th Grade

30 questions

Properties of Light

Presentation

•

8th Grade

28 questions

Acids and Bases Lesson

Presentation

•

8th Grade

27 questions

2/3-8.L.1: Bacteria

Presentation

•

8th Grade

Popular Resources on Wayground

24 questions

PBIS-HGMS Day 10

Quiz

•

6th - 8th Grade

10 questions

HCS SCI 03 Summer School Review 3

Quiz

•

3rd Grade

11 questions

Home Scope

Quiz

•

7th - 8th Grade

15 questions

HCS SCI 05 Summer School Assessment 3 Review

Quiz

•

5th Grade

35 questions

Lufkin Road Middle School Student Handbook & Policies Assessment

Quiz

•

7th Grade

18 questions

Geo 11.3 Area of Circles and Sectors

Quiz

•

9th - 11th Grade

Discover more resources for Science

24 questions

PBIS-HGMS Day 10

Quiz

•

6th - 8th Grade

11 questions

Home Scope

Quiz

•

7th - 8th Grade