Solid, colorless crystals are added to a test tube with a blue solution. The following observations are obtained. Which one(s) are indicative of a chemical reaction taking place? Select all that apply.

The color of the liquid changes from blue to yellow.

The solution temperature changed from 25 degrees to 30 degrees.

Bubbles were forming in the container.

The solid crystals appeared to get smaller.

Which of the following best describes the term "aqueous"?

two aqueous reactants produce a solid product

Which correctly describes the differences in a chemical reaction vs a chemical equation?

Chemical reactions are chemical changes observed in a lab while chemical equations are symbolic representations on paper of a chemical change.

Chemical equations are chemical changes observed in a lab while chemical reactions are symbolic representations on paper of a chemical change.

Chemical reactions are physical changes observed in a lab while chemical equations are symbolic representations on paper of a physical change.

Chemical equations are physical changes observed in a lab while chemical reactions are symbolic representations on paper of a physical change.

What do you look for in a chemical equation to determine if there is a precipitate?

look for two aqueous reactants to the left of the arrow and a solid product to the right of the arrow

look for a liquid to the left of the arrow and a solid to the right of the arrow

look for two liquids to the left of the arrow and a solid to the right of the arrow

look for any solid product and that's it

What does "E" stand for in a chemical equation?

Energy; it indicates heat/light being given off

What best describes the reactants in a chemical equation?

the substances you start with to the left of the arrow

the substances you start with to the right of the arrow

the substances you make to the right of the arrow

the substances you make to the left of the arrow

Chemical Indicators from Equations Practice

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Practice Problem

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Medium

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NGSS

MS-PS1-2, HS-PS1-4, MS-PS1-5

Standards-aligned

Kelly Almond

Used 254+ times

FREE Resource

17 questions

Show all answers

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following describes a precipitate?

a new liquid forms when a solid reactant is heated and melts

a new solid product formed from two aqueous reactants

a new gas forms when a solid is dissolved in a liquid

bubbles form when two aqueous reactants are mixed

a new solid forms when an aqueous reactant freezes

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

All of the following are indicators of a chemical reaction except one. Which one is NOT an indicator that a chemical reaction has taken place?

the production of heat or light

a color change

the production of gas bubbles

the dissolving of one substance in another

an odor change

Tags

NGSS.MS-PS1-2

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation.

HCl (aq) + NaOH (aq) --> NaCl (aq) + H₂O (l)

formation of water

gas bubbles produced

formation of a precipitate

color change

energy change

Tags

NGSS.MS-PS1-2

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

AgNO₃ (aq) + NaCl (aq) --> AgCl (s) + NaNO₃ (aq)

formation of water

gas bubbles

formation of a precipitate

color change

energy change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

Na₂CO₃ (s) + HCl (aq) --> H₂O (g) + NaCl (aq) + CO₂(g)

formation of water

gas bubbles

formation of a precipitate

color change

odor change

Tags

NGSS.MS-PS1-2

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

gas evolution

color change

precipitate formation

energy change

water formation

Tags

NGSS.HS-PS1-4

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

gas bubbles produced

color change

precipitate formation

energy change

water formation

Tags

NGSS.HS-PS1-4

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Which of the following describes a precipitate?

All of the following are indicators of a chemical reaction except one. Which one is NOT an indicator that a chemical reaction has taken place?

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation.HCl (aq) + NaOH (aq) --> NaCl (aq) + H2O (l)

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.AgNO3 (aq) + NaCl (aq) --> AgCl (s) + NaNO3 (aq)

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.Na2CO3 (s) + HCl (aq) --> H2O (g) + NaCl (aq) + CO2 (g)

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

Four students performed four different investigations by combining different substances. Which of the observations is most indicative of a chemical reaction?

Solid, colorless crystals are added to a test tube with a blue solution. The following observations are obtained.Which one(s) are indicative of a chemical reaction taking place? Select all that apply.

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Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation.

HCl (aq) + NaOH (aq) --> NaCl (aq) + H₂O (l)

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

AgNO₃ (aq) + NaCl (aq) --> AgCl (s) + NaNO₃ (aq)

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation. Select all that apply.

Na₂CO₃ (s) + HCl (aq) --> H₂O (g) + NaCl (aq) + CO₂(g)

Solid, colorless crystals are added to a test tube with a blue solution. The following observations are obtained.

Which one(s) are indicative of a chemical reaction taking place? Select all that apply.