Chemistry EOG Review

Chemistry EOG Review

8th Grade

26 Qs

quiz-placeholder

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Chemistry EOG Review

Chemistry EOG Review

Assessment

Quiz

Science

8th Grade

Practice Problem

Medium

NGSS
MS-PS1-5, MS-PS1-2, MS-PS1-4

+1

Standards-aligned

Created by

Angel Hull

Used 64+ times

FREE Resource

26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is a compound?

sodium

sugar

nitrogen

air

Answer explanation

Sodium and Nitrogen are both on the periodic table so they are elements. Air is a homogenous mixture of oxygen, nitrogen, carbon dioxide and water vapor. Sugar is a compound of carbon, hydrogen and oxygen sharing valence electrons.

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

several molecules of water are produced

the mass of the carbon atoms is reduced during this reaction

the mass of the atoms in the reactant equals the mass of the atoms in the products

the mass of the hydrogen atoms is the only thing that remains the same before and after the reaction

Answer explanation

The Law of Conservation of Mass states that the mass of the reactants will equal the mass of the products in a closed system.

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is classified as an element?

carbon dioxide

iron

vinegar

water

Answer explanation

Iron is the only answer choice that is on the periodic table (Fe). The rest are compounds.

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which best describes the sequences of the elements in Period 5 of the periodic table?

highly reactive gases, relative nonreactive metals, metalloids, very nonreactive gases, nonreactive nonmetals

highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmetals, nonreactive gases

nonreactive gases, metalloids, nonreactive metals, highly reactive metals, highly reactive gases

nonreactive gases, nonreactive metals, highly reactive metals, metalloids, reactive nonmetals, reactive gases

Answer explanation

Media Image

A period is a row on the periodic table. All rows start with highly reactive metals followed by less reactive metals and ends with highly reactive nonmetals and finally nonreactive gases.

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which statement is true about a chemical reaction?

the physical states of the atoms in the reaction determine the products

some of the atoms in the reactants will be part of the products

the number of atoms in the reactants determines the products

all of the atoms in the reactants will be a part of the products

Answer explanation

Media Image

According the the Law of Conservation of Mass - ALL of the atoms of the reactants will be part of the products. (Elements stay the same, just get rearranged).

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Chlorine has 7 valence electrons. With what group of elements will chlorine most readily bond?

group 1

group 2

group 16

group 18

Answer explanation

Media Image

Eight is great! Chlorine has 7 valence electrons. It just needs 1 more to be stable. The alkali metals in Group 1 all have 1 valence electron.

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is the best example of a chemical change?

butter melting

egg cooking

paper tearing

water evaporating

Answer explanation

All changes in state (evaporation, melting, freezing) are physical changes. Changes in odor such as when cooking an egg indicate chemical change.

Tags

NGSS.MS-PS1-2

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