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Periodic Table & Matter Flashcards | StudBud
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Periodic Table & Matter
Periodic Table & Matter
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#FRMS8thGradeScienceMatter
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Which element would be a good conductor of heat and electricity?
O= Oxygen
Au= Gold
Ne= Neon
Cl= Chlorine
2
A chemical reaction occurs in an open container&the amount of mass is less in the product.Why?
The temperature of the reactants was low.
A gas was produced.
The salinity of the reactants was high.
A solid was produced.
3
Which of the following is NOT an example of a physical property?
rusting
boiling point
volume
density
4
Is the following chemical equation_________?
unbalanced
balanced
5
Which of these states is false?
elements on left side of row have higher atomic mass
metalloids have properties of metals and nonmetals
least reactive elements are in the far right column
alkali metals are the most reactive metals of all
6
What does the number 6 represent?
number of neutrons in the atom
number of protons in the atom (atomic number)
atomic mass
weight of atom
7
What 2 quantities must be known to calculate the density of a sample of matter?
solubility and mass
color and mass
mass and volume
length and mass
8
Chemical X has mass of 5g, & chemical Y has mass of 10g & both combine what is total mass?
5 grams
15 grams
50 grams
10 grams
9
When a substance changes from a solid to liquid,___________ takes place.
melting
boiling
freezing
evaporation
10
What is demonstrated in the following picture?
Law of Conservation of Mass
The Law of Conservation of Momentum
Law of Superposition
Theory of Natural Selection
11
How does a balanced chemical equation satisfy the Law of Conservation of Mass?
Chemical reaction one or more substances is formed
During a chemical reaction matter is destroyed
Chemical reaction total amount of matter stays the same
Chemical reaction the total number of atoms increase
12
Look at the reaction: C + O 2 >CO 2 What kind of change is shown?
nuclear change
chemical change
physical change
phase change
13
Where are the metalloids located on the periodic table?
in the top row
in the far-right column
in the far-left column
along the stair-step
14
Which of the following subatomic particles has a negative charge?
neutrons
protons
nucleus
electrons
15
All of the following involve chemical changes
EXCEPT________.
the digestion of food in your stomach
the rusting of a car in a junk yard
the burning of gasoline in a car
melting of ice
16
A homogeneous mixture is one that:
you can easily separate the parts
is only in liquid form
can only be separated chemically
you can't see the separate parts
17
Which of the following is an example of a chemical change?
ice freezing
iron rusting
water boiling
paper being cut
18
Based on the periodic table, what is the name of the elements in Group 17?
halogens
alkaline metals
alkali metals
noble gases
19
Which phase of matter has least amount of energy, definite volume, and definite shape?
liquid
solid
none of the above
gas
20
Looking at the picture the
letter
C
represents carbon's_______
atomic mass
chemical symbol
element name
atomic number
21
Which pair of elements has the most similar properties?
I and CA
Li and B
N and P
K and He
22
Which elements in the periodic table are least likely to combine with other element?
alkaline earth metals
transition metals
noble gases
halogens
23
Which element is an alkaline earth metal?
calcium
hydrogen
oxygen
carbon
24
Which of the following is NOT evidence of a chemical change:
formation of precipitate
occurrence of fizzing
color change
change of phase
25
The horizontal rows on the periodic table are called________?
energy levels
groups
periods
spectra
26
What are atoms made of?
protons, electrons , neutrons
only electrons and neutrons
only protons and netrons
only protons and electrons
27
Elements make Atoms, Atoms are like letters which form ______, which are like words.
molecules
mixtures
equations
compounds
28
The following picture represents what type of mixture?
homogeneous
heterogeneous
29
Put ice cube in a heated pan. What will likely happen to the molecules as ice is heated?
The molecules will begin to condense in the air.
The molecules will begin to increase in density.
The molecules will begin to move slower.
The molecules will begin to move faster.
30
How are the elements in the modern periodic table arranged?
number of protons
date of discovery
atomic mass
in alphabetical order
