Investigate how mass is conserved in chemical reactions and relate conservation of mass to the rearrangement of atoms using chemical equations, including photosynthesis.
Identify elements on the periodic table as metals, nonmetals, metalloids, and rare Earth elements based on their physical properties and importance to modern life.
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Q 1/29
Score 0
Which of the following best describes the conservation of mass in a chemical reaction?
30
Mass can be created during the reaction.
The total mass of the reactants equals the total mass of the products.
The mass of the products is greater than the reactants.
The mass of the products is less than the reactants.
Q 2/29
Score 0
During photosynthesis, how is the law of conservation of mass demonstrated?
30
The mass of oxygen produced is less than the mass of carbon dioxide used.
The mass of carbon dioxide and water used is equal to the mass of glucose and oxygen produced.
Mass increases as energy from sunlight is absorbed.
The mass of glucose produced is greater than the combined mass of carbon dioxide and water.
29 questions
Q.
Which of the following best describes the conservation of mass in a chemical reaction?
1
30 sec
SCI.8.6E
Q.
During photosynthesis, how is the law of conservation of mass demonstrated?
2
30 sec
SCI.8.6E
Q.
In a chemical reaction, why do atoms rearrange rather than disappear or multiply?
3
30 sec
SCI.8.6E
Q.
What role does the rearrangement of atoms play in the conservation of mass during chemical reactions?
4
30 sec
SCI.8.6E
Q.
How does the law of conservation of mass apply to a balanced chemical equation?
5
30 sec
SCI.8.6E
Q.
What is the total number of carbon atoms in the chemical formula C6H12O6?
6
30 sec
SCI.7.6B
Q.
How many nitrogen atoms are present in the chemical formula NH3?
7
30 sec
SCI.7.6B
Q.
In the chemical formula CaCO3, how many oxygen atoms are present?
8
30 sec
SCI.7.6B
Q.
How many total atoms are there in the chemical formula CH4?
9
30 sec
SCI.7.6B
Q.
In the chemical formula NaCl, how many chlorine atoms are present?
10
30 sec
SCI.7.6B
Q.
Which of the following is an example of a chemical change?
11
30 sec
SCI.7.6C
Q.
When a piece of paper is burned, which type of change occurs?
12
30 sec
SCI.7.6C
Q.
Which process represents a physical change?
13
30 sec
SCI.7.6C
Q.
Which of these scenarios does not involve a chemical change?
14
30 sec
SCI.7.6C
Q.
What type of change occurs when salt is added to water and it dissolves?
15
30 sec
SCI.7.6C
Q.
Which of the following examples is a chemical change?
16
30 sec
SCI.7.6C
Q.
Which process is an example of a chemical change?
17
30 sec
SCI.7.6C
Q.
Which of the following is a physical change?
18
30 sec
SCI.7.6C
Q.
Which is an example of a chemical change occurring in everyday life?
19
30 sec
SCI.7.6C
Q.
Which of the following elements is classified as a metal based on its physical properties?
20
30 sec
SCI.6.6C
Q.
Which element is commonly recognized as a metalloid and plays a crucial role in the tech industry?
21
30 sec
SCI.6.6C
Q.
Which of the following elements is a nonmetal and essential for life, commonly found in the human body?
22
30 sec
SCI.6.6C
Q.
Which element is part of the rare Earth elements and is used in the production of powerful magnets?
23
30 sec
SCI.6.6C
Q.
Which element is classified as a rare Earth element and plays a pivotal role in producing color in television and computer screens?
24
30 sec
SCI.6.6C
Q.
Which of the following elements is considered a nonmetal and is vital for forming strong chemical bonds in organic molecules?
25
30 sec
SCI.6.6C
Q.
Which element is classified as a metalloid and is known for its properties as a semiconductor?
26
30 sec
SCI.6.6C
Q.
Which of the following elements is known as a metal and is commonly used in electrical wiring due to its high conductivity?
27
30 sec
SCI.6.6C
Q.
Which element is classified as a nonmetal and is crucial for water molecule formation?
28
30 sec
SCI.6.6C
Q.
Which of the following elements is a metal and commonly used in the construction industry for structural support?
