Science Test 3

Question 1

Define Matter

Answer 1

Matter is anything with a mass and a volume

Question 2

What are the three states of matter?

Answer 2

Solid, Liquid Gas

Question 3

What are the characteristics of a solid? (2)

Answer 3

Definite volume and shape / particles “run in place” so it holds it’s shape.

Question 4

What are the characteristics of a liquid? (2)

Answer 4

Definite volume but no definite shape / particles move over and around each other freely, allowing the liquid to flow

Question 5

What are the characteristics of a gas? (2)

Answer 5

No definite volume or shape / Particles move freely around and are not held close together

Question 6

What is the kinetic theory of matter?

Answer 6

The Atoms/ Molecules that make up matter are in constant motion.

Question 7

What determines the state of matter?

Answer 7

Temperature

Question 8

Define thermal expansion

Answer 8

Matter extends as it gets hotter, and it contracts when it is cooled

Question 9

What is an atom?

Answer 9

An atom is the particles that make up matter

Question 10

What is an element?

Answer 10

Matter made up of only one kind of atom

Question 11

What is a compound?

Answer 11

Matter made up of more then 1 kind of atom chemically combined or 2 or more elements chemically combined

Question 12

Is Co an element or a compound and why

Answer 12

It is an element because there is only one capital letter

Question 13

Is CO an element or a compound and why

Answer 13

It is a compound because there is more than one capital letter

Question 14

Is H an element or a compound and why

Answer 14

It is an element because there is only one capital letter

Question 15

What kind of charge does a proton give

Answer 15

postive charge

Question 16

What kind of charge does a neutron give

Answer 16

neutral charge

Question 17

What kind of charge does a electron give

Answer 17

negative charge

Question 18

where are the protons located on an atom

Answer 18

nucleus

Question 19

where are the neutrons located on an atom?

Answer 19

nucleus

Question 20

where are the electrons located on an atom?

Answer 20

electron cloud

Question 21

What is the unit for protons, neutrons, and electrons?

Answer 21

Amu (atomic mass unit)

Question 22

What are the masses of proton, neutrons, and electrons?

Answer 22

P = 1 amu
N = 1 amu
E = 1/2000 amu

Question 23

What is an atomic number?

Answer 23

an atomic number is the number of protons in the nucleus of an atom

Question 24

What is the atomic mass?

Answer 24

the atomic mass is the number of protons and neutrons in the nucleus

Question 25

What are valence electrons?

Answer 25

Valence electrons are the electrons on the outermost energy level of an atom

Question 26

The number of electrons equals the number of

Answer 26

protons

Question 27

Where is most of the mass in an atom located?

Answer 27

in the nucleus

Question 28

How many electrons can the first energy level hold?

Answer 28

2 electrons

Question 29

How many electrons can the second energy level hold?

Answer 29

8 electrons

Question 30

What is an isotope?

Answer 30

an isotope is different forms of an element. (Same number of protons but different number of neutrons)

Question 31

Draw a neon atom if the atomic number is 10, the atomic mass number is 20, it is in the second row on the periodic table, and it has eight valence electrons

https://docs.google.com/presentation/d/1WuvZm_-TSH6EIwSkrQNVtOtRkdzMFico0WG60g5QY8o/edit#slide=id.p

Answer 31

https://docs.google.com/presentation/d/1Qjajw6yYhwN5MQXtF0xC6LZJeAyyvnyvUJY5ik83joQ/edit#slide=id.p

Question 32

What does the dot diagram look like for silver if the symbol is Ag and the amount of valence electrons is 1

https://docs.google.com/presentation/d/1sYJQPjd7JjGmYgqqJM8j9jKPfXQ-C-R5lVmKPy2lBx0/edit#slide=id.p

Answer 32

https://docs.google.com/presentation/d/10DmPqVNHIqZOvB5Ms2Spqaix85-9ah36HVB2SrgEpFc/edit#slide=id.p

Question 33

https://docs.google.com/presentation/d/1A257Frm73CR-T5sX5mLE7bRhoMkTrsIrtmmW82s5nwQ/edit?usp=sharing

Answer 33

https://docs.google.com/presentation/d/1YD5GrpG6kUzTmFx0E0Kr8_0AGv9nI5q5ccGFckQZ7vo/edit?usp=sharing

Question 34

Define chemical formula

Answer 34

A chemical formula shows the kinds and proportions of atoms in a compound

Question 35

Define molecule

Answer 35

A molecule is made of two or more atoms bonded together

Question 36

Why do atoms bond?

Answer 36

to become stable

Question 37

When are atoms stable?

Answer 37

when they have eight valence electrons (two for hydrogen and helium)

Question 38

How many atom of each element are in this chemical formula?
C6H12O6

Answer 38

6 C atoms, 12 H atoms, and 6 O atoms

Question 39

Simplify this chemical formula and state haw many atoms of each element are present
Ch3ChOHOOH

Answer 39

Ch4O3H2
4 Ch atoms, 3 O atoms, 2 H atoms

Question 40

What is an ionic bond?

Answer 40

an Ionic bond is when metals give electrons to nonmetals (shifting electrons) to become stable

Question 41

If an atom loses electrons what is its charge now?

Answer 41

Its charge now is positive

Question 42

If an atom gains electrons what is its charge now?

Answer 42

Its charge now is negative

Question 43

What is a positvie Ion?

Answer 43

A positive ion is a metal/atom that loses electrons to become stable

Question 44

What is a negative Ion?

Answer 44

A negative ion is a non-metal/atom that gains electrons to become stable

Question 45

What is a covalent bond?

Answer 45

A covalent bond is when non-metals share electrons with non-metals to become stable

Question 46

Valence Electrons = 5
1) Would this lose or gain electrons?
2) How many would it lose/gain?

Answer 46

1) gain
2) 3+

Question 47

Valence Electrons = 2
1) Would this lose or gain electrons?
2) How many would it lose/gain?

Answer 47

1) lose
2) 2-

Question 48

(He+) + (K-) =

Answer 48

HeK

Question 49

(Cl1+) + (Al3-) =

Answer 49

Cl3Al1

Question 50

(C4+) + (Sn4-) =

Answer 50

CSn