A student creates a ball-and-stick model to represent the atomic scale of a substance. Which of these best describes the model?

10 molecules representing 10 elements

10 elements representing 10 molecules

Graphite and diamond are both made of carbon but their properties are very different as can be seen in the picture below. If they're made of the same thing, why do they have such different properties?

they have different molecular structures

the carbon atoms in graphite have less protons which makes it softer

the carbon atoms in diamond have more protons which make it stronger

graphite is made up of dark carbon atoms

Which three of the following can the Periodic Table be used for?

the symbols used to identify each element

what it can combine with to make a chemical

to find out when each element was discovered

The balanced chemical equation of hydrogen peroxide decomposing is shown below. Select all correct statements about it. $$2H_2O_2(l) \rightarrow O_2(g) + 2H_2O(l)$$

A) There are two peroxide molecules on the reactant side.

B) There are eight atoms in the reactants.

E) Mass must be conserved so there are an equal number of atoms in the reactants and products.

C) There are two atoms on the reactant side.

D) Mass must be conserved so there are an equal number of molecules in the reactants and products.

Consider the reaction of sodium and water below and select all the correct statements about it. $$2Na(s) + 2H_2O(l) \rightarrow 2NaOH(aq) + H_2(g)$$

There are more sodium atoms in the reactants than in the products.

Mass is conserved throughout the reaction.

There are more hydrogen atoms in the reactants than in the products.

There are as many atoms in the reactants as there are in the products.

There is more hydrogen gas in the products than in the reactants.

Which of the following are represented by these diagrams?

two different forms of the same mixture

two different forms of the same compound

Which of the following correctly classifies the elements as Metal, Metalloids, or Nonmetal? A. Arsenic - Metal, Boron - Metalloid, Germanium - Nonmetal B. Arsenic - Metalloid, Boron - Metalloid, Germanium - Metalloid C. Arsenic - Metalloid, Boron - Nonmetal, Germanium - Metalloid D. Arsenic - Nonmetal, Boron - Metal, Germanium - Metalloid

C. Arsenic - Metalloid, Boron - Nonmetal, Germanium - Metalloid

A. Arsenic - Metal, Boron - Metalloid, Germanium - Nonmetal

B. Arsenic - Metalloid, Boron - Metalloid, Germanium - Metalloid

D. Arsenic - Nonmetal, Boron - Metal, Germanium - Metalloid

What is the primary difference between a chemical change and a physical change?

B) Chemical changes result in new substances, while physical changes do not.

D) Physical changes result in new substances, while chemical changes do not.

A) Chemical changes involve a change in state, while physical changes do not.

C) Physical changes involve a change in temperature, while chemical changes do not.

RE Chemical Reactions & Atomic Structure REVIEW

Quiz

•

Science

•

5th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-PS1-1, MS-PS1-5, MS-PS1-2

+1

Standards-aligned

Rachel Evans

Used 5+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Based on its location on the partial periodic table shown above, which element would you predict has chemical properties that are most similar to argon (Ar)?

A. Chlorine (Cl)

B. Helium (He)

C. Nitrogen (N)

D. Zinc (Zn)

Tags

NGSS.MS-PS1-1

2.

DROPDOWN QUESTION

30 sec • 1 pt

Helium has an atomic number of two because it has two (a) .

atoms

protons

neutrons

molecules

Tags

NGSS.MS-PS1-1

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Select all of the following events in which a chemical change occurs.

Chocolate syrup dissolves into warm milk.

Sugar is heated until it turns into a brown caramel sauce.

A piece of paper is cut up into 12 pieces.

Two unknown liquids are mixed together and a gas is produced.

Toast is lightly charred in a toaster.

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What atoms combine to make up a molecule of water?

1 hydrogen, 1 oxygen

1 hydrogen, 2 oxygen

2 hydrogen, 1 oxygen

2 hydrogen, 2 oxygen

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calcium carbonate, a common material found in chalk and antacids, is shown decomposing in the balanced chemical equation below. Count the number of atoms on the reactant and product side of the equation. How many more atoms are in the products than the reactants?

0

1

2

3

4

Tags

NGSS.MS-PS1-5

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What three fundamental particles are atoms made of?

molecules

protons

electrons

carbon

neutrons

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following correctly summarizes the process of ice turning into water and then into steam?

a liquid to a solid to a gas

a solid to a gas to a liquid

a liquid to a gas to a solid

a gas to a liquid to a solid

a solid to a liquid to a gas

Tags

NGSS.MS-PS1-4

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RE Chemical Reactions & Atomic Structure REVIEW

30 questions

Based on its location on the partial periodic table shown above, which element would you predict has chemical properties that are most similar to argon (Ar)?

Helium has an atomic number of two because it has two (a) .

Select all of the following events in which a chemical change occurs.

What atoms combine to make up a molecule of water?

Calcium carbonate, a common material found in chalk and antacids, is shown decomposing in the balanced chemical equation below. Count the number of atoms on the reactant and product side of the equation. How many more atoms are in the products than the reactants?

What three fundamental particles are atoms made of?

Which of the following correctly summarizes the process of ice turning into water and then into steam?

A student creates a ball-and-stick model to represent the atomic scale of a substance. Which of these best describes the model?

Identify the type of transformation that has taken place.

What type of change occurred?

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