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6ACC/7th Grade Chemistry Quiz Flashcards | StudBud
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6ACC/7th Grade Chemistry Quiz
6ACC/7th Grade Chemistry Quiz
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Chemistry quiz for chemistry unit.
Flashcards
23 cards
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Questions
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Answers
1
What is density?
height/weight
grams/square inches
mass/volume
name/age
2
Which element is most abundant in the ocean?
MgSO4
hydrogen
oxygen
CO2
3
How are physical and chemical changes different? (PC= Physical Change, CC= Chemical Change)
A PC is when the subject stays the same, a CC is when it changes unexpected
A PC is when the subject changes unexpected, a CC is when it stays the same
A PC is when the subject changes color, a CC is when it changes shape
A PC is when the subject boils, a CC is when it bubbles
4
What is an atom?
building blocks of matter
building blocks of life
building blocks of mater
building blocks of lyfe
5
Luster
the quality of giving off light, brightness, glitter, brilliance
the quality of giving off radiation in the form of different kind of rays
the quality of giving off sound in the form of rays
the quality of giving off a certain smell, taste, temperature, or feeling
6
According to the graduated cylinder, which liquid is the most dense?
honey
ethanol
glycerine
dishwashing soap
7
Physical Properties
A disaster that occurs in an area that can devastate nearby life
The powerhouse of the cell
A characteristic of a substance that can be observed without changing it
Examples are color, shape, reflection of light, smell, etc
8
Define the difference between atomic mass and the atomic number of an element (A.M./A.N = atomic mass/atomic number)
A.M. is morning, A.N. is night
A.M. is the average mass of an element's protons, A.N. is the # of protons
A.M. measures how many molecules are in matter, A.N. is how much it weighs
A.M. is made in foreign countries, A.N. is produced locally
9
How are metals, metalloids, and non-metals identified?
shininess, hardness, insulatibility, brittlebility
luster, conductivity, marbleability
luster, conductivity, malleability
shininess, conductivity, malleability
10
Color
The property possessed by an object that produces sensations on the eyes
The sensation possesed by an object that if given will make it taste funny
The property possessed by an object that keeps it intact after damage
The sensation possesed by an object that if given will make it smell funny
11
Which gas is most abundant in the atmosphere?
nitrogen
oxygen
helium
hydrogen
12
Malleability
the ability for a solid to be hammered and get shattered
the ability to change from liquid to gas based on air quality
the ability to change from solid to a liquid based on temperature
the ability for a solid to be hammered without shattering
13
What is a chemical reaction?
The process by which one or more substances change to produce the same one
The process by which one or more substances stay the same
The process by which one or more substances change to produce a new one
The process by which one or more substances step up on Mohs hardness scale
14
What is a compound?
A pure substance made of one element represented by a chemical symbol
the average mass of an element and its protons
A pure substance made of two or more elements
A pure substance made of one element that removes waste from the cell
15
What is an element?
A pure substance made of one element represented by a chemical symbol
classification of an element based on luster,conductivity, and malleability
A pure substance made up of two or more elements
building blocks of matter
16
Which mineral can BE scratched by anything and cannot scratch anything ELSE?
Talc
Topaz
Arsenic
Diamond
17
If a substance _______, it means that gas has been produced chemically. What belongs in the blank?
changes color
bubbles
precipitates
changes temperature
18
Which elements are most common in most living matter?
oxygen, carbon, hydrogen, nitrotype
oxygen, helium, hydrogen, carbon
oxygen, carbon, hydrogen, and nitrogen
oxygen, dust, hydrogen, nitrogen
19
What does the atomic number tell us about an element?
The number of propons in the nucleus of an atom
The number of electrons in the nucleus of an atom
The number of neutrons in the nucleus of an atom
The number of protons in the nucleus of an atom
20
What is a subconductivity?
The conductivity of non-metals; does not conduct heat or electricity
The conductivity that metalloids have; neither conductor or insulator
The conductivity that is against the law; $8,000 fine for violators
The conductivity of metals; conducts heat and electricity
21
Which mineral CAN scratch anything but cannot be scratched ITSELF?
Diamond
Topaz
Arsenic
Talc
22
What does PECBS stand for?Why do we use PECBS in Chemistry?
Please Excuse My Dear Aunt Sally- to remember evidence of PEMDAS
Please Excuse My Very Extra Mother Just Served Us Nachoes- states of matter
Please Excuse Coughs Burps Sneezes- remember evidence of a chemical change
Please Excuse Children Being Salty- to remember not be mean
23
How many elements are on Mohs hardness scale?
4
7
9
10
