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#science #grade7
Flashcards
45 cards
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Practice quiz
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Questions
45
Answers
1
Surrounding the nucleus are negatively charged particles, what are these called?
Protons
Dogs
Neutrons
Electrons
2
What is the atomic number for Helium?
balloonnsssssssss
1.2
5
2
3
What is the atomic number for Sodium?
?????
34895987689
11
7
4
What is it called when two or more elements combine chemically?
Elements
Compounds
Atoms
Magnesium
5
In the nucleus, what are the
positively
charged particles called?
Steves
Protons
Electrons
Neutrons
6
What two elements make up table salt?
Sodium and Oxygen
Neon and Sodium
Boron and Hydrogen
Sodium and Chlorine
7
What is the name of the table where you can find elements, atomic number, and atomic mass?
Periodic Table of Elements
I have no clue
Some table that starts with a P
Periodic Table
8
What is the mass number equation?
.....what???
Mass number = (number of protons) - (number of electrons)
Mass number = (number of protons) + (number of neutrons)
Mass number = (number of neutrons) - (number of electrons)
9
What is the number of protons and electrons in an atom of an element called?
Atomic Number
Why should I know?
Atomic Mass
Horses
10
What is the smallest unit of an element that has characteristics of that element?
Periodic Table of Elements
Atomic Number
Atoms
Nuclei
11
Why does the pepper move when you add soap?
The soap breaks the Hydrogen bonds.
The soap is magic.
The soap is too heaving for the pepper.
The soap breaks the strong bonds.
12
By definition, atoms have no overall what?
Compounds
Charge
Elements
Electrical Charge
13
What is the atomic number for Boron?
:)
9
675
5
14
The # of ________ determines which element is which.
mass
nucleus
neutrons
protons
15
What is the center of an atom called?
Harambe
Nuclei
Nucleus
Oxygen
16
A _________ is the # that is telling you how many of that element there is in a compound.
exponent
basketball
coefficient
subscript
17
What is the atomic number for Hydrogen?
Uno
12
2
1 duh
18
How are the atomic # and the # of protons related to each other?
They are large numbers
No idea
They are different
They are equal
19
We call water a ________ molecule. (it has a + & - end)
semi-polar
polar
north pole
no idea
20
What is the total measurement of protons and neutrons?
Atomic mass
Elements
Atomic Size
Atoms
21
What substance cannot be broken down into smaller things?
Compounds
Elements
Krypton
Sodium
22
Atoms are NOT _____________ or ____________ during a chemical reaction.
broken or destroyed
found or broken
created or destroyed
lost or found
23
What is the atomic number for Carbon?
385
6
4
87
24
Most of the particles in the nucleus contain no charge, what are these called?
Electrons
Jimmy's
Protons
Neutrons
25
True or False... You can change a subscript to what you want it to be.
False
True
26
A ____________ is the # you put in front of chemical formulas to balance a chemical equation?
exponent
soccer
subscript
coefficient
27
All of the chemical reactions that occur in an organism are called that organisms' ________.
Lebron
chemical phospholipids
appetite
metabolism
28
What is the atomic number for Oxygen?
3998
9
8
0
29
If Oxygen has 8 protons, how many electrons must it have?
8
10
7
9
30
If sodium has an atomic # of 11, how many protons does it have?
9
11
21
23
31
In a chemical equation, the right side of the arrow is the _______ side.
products
left
reactants
right
32
Uranium has 92 protons. It also has 146 neutrons. What is its mass #?
240
232
238
92
33
If Carbon has 6 protons and 6 neutrons in its nucleus, what is its mass #?
10
12
20
11
34
Atoms must have what?
Equal number of protons and electrons
Equal number of protons and neutrons
Food
Equal number of electrons and neutrons
35
What two atoms make up a water molecule?
Hydrogen and Oxygen
Sodium and Hydrogen
Sodium and Hydrogen
Sodium and Chlorine
36
In a chemical equation, the left side of the arrow is called the ________ side.
products
right
left
reactant
37
Why is water so important to living things?
it makes up 50-75% of most living things.
it makes up 70-95% of most living things.
it makes up 60-80% of most living things.
it makes up 30-40% of most living things.
38
How LIT was this Quiz game?
It was so LIT
it was amazing!!!!!!
Very!!!!!
Extremely
39
What is the atomic number for Nitrogen?
6
9
7
8
40
True or False... You can destroy matter.
True
False
41
On a scale from 1-10, how much did you like chemistry? (10 being a lot)
7-9
10
1-3
4-6
42
Of the naturally occurring elements on earth, how many are essential to living organisms?
25
0
10
10000000000
43
What is the atomic number for Calcium?
19
20
49
24
44
Another word for a small unit or particle.
Dog
Atom
Molecule
Element
45
What is the atomic number for Magnesium?
12
786
345
8
