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Periodic table final Flashcards | StudBud
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Periodic table final
Periodic table final
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8th science interactions of matter
Flashcards
57 cards
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Practice quiz
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Questions
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Answers
1
Hydrogen has one proton, one electron, and zero neutrons. What is the atomic mass of hydrogen?
0
3
1
2
2
The diagram shows the reaction of fireworks burning. Which about the reaction is true?
New matter was created in the form of light and heat
Atoms were destroyed leaving less atoms in the products
Atoms were rearranged but no matter was created or destroyed
Matter was destroyed, leaving fewer atoms after the reaction
3
The first electron shell can hold 8 valence electrons.
True
False
4
Gold is a liquid at room temperature.
False
True
5
All of the following are indicators of a chemical change EXCEPT:
Color Changes
Formation of a precipitate
Formation of a gas
Phase changes
6
Fill in the blank with the correct coefficients in order
1,2,3
2,2,2
2,1,2
1,2,1
7
Which word would best describe the element in the box numbered “2”?
Non-Metal
Metal
Metalloid
Liquid
8
Balance the equation, which of the following represents the correct order of coefficients?
2,1,2,1
This equation in balanced
1,2,3,4
2,2,2,1
9
Which process best illustrates elements combining to make a new compound?
Mixing two liquids to make a solid precipitate
Cutting a solid to make more parts
Boiling a liquid to make steam
Melting a solid to make a liquid
10
Fill in the blank with the correct coefficients in order
2,2
1,1
1,2
2,1
11
How many total atoms are represented in the formula?
3
9
2
6
12
Which two are examples of physical properties?
Texture and color
Precipitate and evolution of light
Burning wood and baking a cake
Flammability and reactivity
13
BEFORE balancing the equation, how many atoms of NITROGEN are in the PRODUCTS?
1
4
2
3
14
How many hydrogen atoms are in the following compound C₂H₃N?
3
2
1
o
15
Which equation is balanced?
2Na + Br2 --> 2NaBr
2Na + Br2 --> NaBr
Na + Br2 --> NaBr
3Na + Br2 --> 2NaBr
16
Which of the following is an example of a PHYSICAL change?
Color change
Evolution of a light
Evolution of a gas
Ripping paper
17
Why would the total mass of the product be less than the reactant(s) after a chemical reaction?
Atoms involved in the reaction lost matter
Gasses were released into the atmosphere
A physical change occurred
Precipitates were created
18
A solid changing to a liquid
Melting
Sublimation
Freezing
Condensation
19
When balancing chemical equations, which feature are your able to change?
Element symbols
Compounds
Coefficients
Subscripts
20
All of the following are considered PHYSICAL changes EXCEPT:
lighting a match
water condensating
cutting paper
boiling water
21
What is the significance of a column in the periodic table?
A column, period, includes elements with similar properties.
A column, period, elements have the same number of electrons
A column,group, includes elements with similar properties.
A column, group, elements have the same number of electrons.
22
Fill in the blank with the correct coefficients in order
4,5
2,3
5,6
3,4
23
How many moles are represented in the formula?
2
4
1
3
24
How many hydrogen atoms must bind to an oxygen atom to form a water molecule?
2
4
3
1
25
How are the elements organized on the Periodic Table?
Elements are arranged alphabetically.
Elements are ordered by atomic weight.
Elements are grouped by color
Elements are ordered by atomic number
26
Another name for a solution is:
Heterozygous mixture
Homozygous mixture
Homogeneous mixture
Heterogeneous mixture
27
Which statement about matter is true?
Atoms are not matter
Living things are not matter
Matter exists only when you see it
Matter is made up of atoms
28
Hydrogen has 1 proton, 1 electron, and 0 neutrons. What is the atomic mass of Hydrogen?
2
3
1
0
29
Which characteristic would best describe the element in the box numbered “4”?
Nonmetal
Metal
Metalloid
Plasma
30
The period number is equal to the number of electron shells
True
False
31
Two fluids are mixed in a beaker and a solid forms, this is proof of what?
Physical change
Heat exchange
Gas exchange
Chemical reaction
32
A solid changing to a gas; skipping the liquid phase
Freezing
Sublimation
Evaporation
Melting
33
How is the Law of Conservation of Mass best represented in a chemical reaction?
Mass of the reactants has no relationship to the products
Mass of the reactants is greater than the mass of products.
Mass of the reactants is equivalent to the mass of products.
Mass of the products is greater than the mass of reactants.
34
How do physical and chemical changes relate to the law of conservation of mass?
Changes show the mass is less before the reaction than after
Phys. and chem. changes don't relate to law of cons. of mass
Changes show the mass is the same before &after the reaction
Changes show mass is greater before the reaction than after
35
After balancing the chemical equation,how many atoms of HYDROGEN to you have in your REACTANTS?
3
1
2
4
36
Noble gases all have full outer electron shells.
False
True
37
Which number represents the element with the least number of protons?
4
3
1
2
38
An element's reactivity is based on its number of valence electrons.
True
False
39
Use your periodic table to locate the element in Group 8, Period 3. This element is a _______.
Transition metal
Noble gas
Alkali metal
Halogen
40
What part of the formula is the coefficient?
3
O
C
2
41
All of the following are physical properties of matter EXCEPT:
Texture
Flammability
Odor
Color
42
How many neutrons does a Potassium atom have?
20
2
19
39
43
Burning wood is an example of a ___________
Chemical change
Physical change
44
Where on the per. table would you find an element that is shiny, ductile, and conducts heat?
After (right of) the staircase
Before (left of) the staircase
On the staircase
45
Which of the following is an example of a chemical change?
Density
Mass
Texture
Color change
46
How many atoms of oxygen must be present in the product to make it a balanced equation?
6
4
1
2
47
Which is the BEST example of a PURE substance?
Air
Milk
Gold
Peanuts
48
A gas changing to a liquid
Melting
Freezing
Sublimation
Condensation
49
Which element is the most reactive?
2
1
3
4
50
A liquid changing to a solid.
Melting
Freezing
Sublimation
Condensation
51
Which of the following is an example of a homogenous mixture?
Water
Gold (Au)
Bag of jelly beans
Kool-aid
52
A liquid changing to a gas.
Sublimation
Freezing
Evaporation
Melting
53
What will most likely happen to the molecules of an ice cube in a heated pan?
The molecules will begin to move faster
The molecules will begin to move slower
The molecules will begin to condense in the air
The molecules will begin to increase in density
54
How does the atomic number change as you move from left to right on the periodic table?
It decreases.
It does not change.
It increases.
It skips numbers.
55
Which part of the formula is the subscript?
C
O
3
2
56
Fill in the blank with the correct coefficient
3
1
2
4
57
All of the following are indicators that a chemical change has occurred, EXCEPT:
Evolution of heat
Evolution of water
Color change
Evolution of light
