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Chemistry- atoms, elements, States of matter, phases Flashcards | StudBud
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Chemistry- atoms, elements, States of matter, phases
Chemistry- atoms, elements, States of matter, phases
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a #science quiz for 8th grade
Flashcards
23 cards
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Questions
23
Answers
1
What charge is a Neutron?
Negative
Neutral
Positive
2
What charge is a proton?
Positive
Neutral
Negative
3
Elements are_____
Made up of one kind of atom
Negatively charges particles
The center of an atom composed of protons and neutrons
Subatomic particles with no charge
4
Ions are__
elements that have gained or lost electrons
elements that have gained or lost protons
elements that have gained or lost neutrons
5
The change of a gas to liquid is____
evaporation
Condensation
sublimation
6
What do metals conduct?
Electricity
Heat
Trains
Heat and electricity
7
Which of the following is the Symbol of the element Helium?
2
H
Helium
He
8
Water has how many hydrogen atoms for every 1 oxygen atom?
0
1
2
9
Subatomic particles called_______ are negatively charged and found in orbits.
Neutrons
Protons
Electrons
10
What is an atom?
Atoms are not the smallest unit of matter
Atoms are living things that make up all matter
Atoms are the smallest unit of matter t
11
The law of conservation of mass says_____
That matter is neither created or destroyed
Push is equal to pull
objects in motion tend to stay in motion
12
An electron's charge is....
positive
Neutral
Negative
13
The change of a liquid to a gas is ____
Freezing
Evaporation
condensation
melting
14
What created our universe?
Humans
Aliens
The Big bang
15
During which phase change does a solid change directly into a gas?
Melting
Evaporation
sublimation
16
Are electrons located inside or outside the nucleus?
outside
Inside
17
An atom with a neutral charge hold the same number of...
protons and electrons
Neutrons and protons
Neutrons and electrons
18
How many Protons does Fluorine have?
18.998
9
10
0
19
What is the atomic mass of helium?
4.003
2
He
8
20
How many electrons can the innermost electron shell hold?
1
2
4
3
21
How many neutrons does fluorine have? (symbol is F)
9
0
8
10
22
Particles in a solid are_____
tightly packed and vibrate but do not move past one another.
Able to move freely and have indifinite shape
tightly packed but able to slide over each other
23
Particles in a gas are__
Tightly packed but are able to slide over each other
Able to move freely and have an indefinite shape
Tightly packed vibrate but do not move past one another.
