The law of conservation of mass states that....

Matter cannot be created or destroyed

Matter can be created but not destroyed

The formula below represents the most common carbohydrate known as glucose. Which information can be determined from the chemical formula? C 6 H 12 O 6

The number of atoms of each element in a glucose molecule

The structural arrangement of the atoms in a glucose molecule

The color of a glucose molecule

For an investigation a student poured a blue solution of CuSO 4 into a beaker. The student placed a shiny, silver-colored strip of zinc metal in the solution and observed the changes. The student inferred that a chemical reaction occurred. What evidence supports this inference?

A dark solid formed on the zinc metal.

The zinc metal remained silver-colored and shiny

The CuSO 4 solution turned blue when the zinc metal was added.

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

Coal is made up of more than one element

Chemical Formulas

Quiz

•

Chemistry

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

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

Standards-aligned

Used 512+ times

FREE Resource

22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many atoms are there TOTAL in:
H₂SO₄

6

5

7

3

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Sodium (Na) are in 6NaCl?

1

12

6

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many O's are in Al₂(SO₄)₃

4

12

7

24

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

How many Elements are in the compound C₂H₈O ?

2

1

3

0

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If there is no subscript, there is ______ atom(s) of that element.

0

2

only 1

1 million

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many elements are present in this compound?
Mg₂As₃COHNi₂

2

4

6

10

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many molecules are in 10MgCl₂?

10

2

30

13

Tags

NGSS.MS-PS1-1

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Chemical Formulas

22 questions

How many atoms are there TOTAL in:
H₂SO₄

How many Sodium (Na) are in 6NaCl?

How many O's are in Al₂(SO₄)₃

How many Elements are in the compound C₂H₈O ?

If there is no subscript, there is ______ atom(s) of that element.

How many elements are present in this compound?
Mg₂As₃COHNi₂

How many molecules are in 10MgCl₂?

Which of these is an element?

In this image, what are the symbols in red are called the_______.

The law of conservation of mass states that....

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Chemical Formulas

22 questions

How many atoms are there TOTAL in:H2SO4

How many Sodium (Na) are in 6NaCl?

How many O's are in Al₂(SO₄)₃

How many Elements are in the compound C2H8O ?

If there is no subscript, there is ______ atom(s) of that element.

How many elements are present in this compound?Mg2As3COHNi2

How many molecules are in 10MgCl2?

Which of these is an element?

In this image, what are the symbols in red are called the_______.

The law of conservation of mass states that....

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How many atoms are there TOTAL in:
H₂SO₄

How many Elements are in the compound C₂H₈O ?

How many elements are present in this compound?
Mg₂As₃COHNi₂

How many molecules are in 10MgCl₂?