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Introduction to Chemistry 8th Grade Flashcards | StudBud
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Introduction to Chemistry 8th Grade
Introduction to Chemistry 8th Grade
25 terms
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Medium-Middle School level
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Questions
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Answers
1
Which particle has a negative charge?
neutrons
electrons
protons
the nucleus
2
Which of the below is an example of a compound?
H2O
NaCl
Iron
Selenium
3
Which of the below is an example of a mixture?
Cream
NaCl
Water
Air
4
The period table is organized from lowest to highest ___________________________.
weight
atomic number
in the alphabet
number of protons
5
When we separated cream into butter and liquid buttermilk this demonstrated the properties of
an element
a solution
a mixture
a compound
6
NaCl is an example of a
Mixture
Compound molecule
Atom of an element
Compound atom
7
Which of the below is not a molecule (2 or more atoms bound together)
N2
H2O
Fe2
Au
8
The acronym for atomic number= protons & = electrons is
PAN
APO
APE
MAN
9
What is the atomic number of Calcium (Ca)?
10
20
40
80
10
Elements that show properties of both metals and nonmetals are called
metals
gases
metalloids
nonmetals
11
Which of the below is an example of a nonmetal?
Aluminum (Al)
Hydrogen (H)
Copper (Cu)
Sodium (Na)
12
How many electrons does Chlorine have?
35
36
12
17
13
What is the mass or weight of 1 atom of Beryllium (Be)?
4 amu
5 amu
9 amu
10 amu
14
What is the name of the following compound? CO2
Glucose
Ammonia
Oxygen
Carbon Dioxide
15
Chemistry is the science of
living things
properties of matter
atoms
forces
16
A material and large portion of the periodic table is made of metals that
brittle and break easily
conduct electricity
are solid at room temp
have 4 valence electrons
17
Which of the below are element molecules?
Fe2
H2O
Cl2
NH3
18
What 2 particles are found in the nucleus of every atom!
neutrons and electrons
protons only
protons and neutrons
electrons and protons
19
Which of the following DOES NOT indicate a chemical reaction is taking place?
Temperature change
Cloudiness of mixture
Gas produced
A solid or precipitate is formed
20
How many valence electrons does #14 Silicon have?
4
28
14
1
21
Which of the below particles is found in the nucleus of an atom?
protons
neutrons
valence electron
electrons
22
A material that is not able to conduct electricity.
metal
metalloid
nonmetal
gas
23
How many valence electrons does #4 Beryllium have?
4
2
1
9
24
The heaviest element on THE PERIODIC TABLE IN THE BACK OF THE ROOM is
Cerium
Lawrenceium
Hydrogenq
Radon
25
How many Hydrogen atoms are in glucose C6H12O6
0
6
12
24
