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Quarter 1 Test

Total questions: 79

Worksheet time: 40mins

Name
Class
Date
1.

What step does every scientific experiment begin with?

a)

hypothesis

b)

question/problem

c)

procedures

d)

conclusion

2.
The independent variable is the ONE thing you _____.
a)
change on purpose
b)
control or keep constant
c)
measure
3.
Austin is studying states of matter by heating water in a pan.  Which statement from his notebook is an observation?
a)
It is hard to estimate the size of the bubbles.
b)
Tiny bubbles form on the bottom of the pan.
c)
The bottom of the pan must be very hot.
d)
I think there is air in the bubbles.
4.
What is another word for hypothesis?
a)
evidence
b)
graph
c)
investigation
d)
prediction
5.

How many independent variables should be tested at a time in a scientific investigation?

a)

none

b)

one

c)

two

d)

Four

6.

This is the outcome of the experiment. We get data and results from this.

a)

Independent Variable

b)

Constant

c)

Control

d)

Dependent Variable

7.

What is another name for a hypothesis

a)

prediction

b)

graph

c)

evidence

d)

guess

8.

Using one or more of your senses to gather information is called

a)

Hypothesizing

b)

Predicting

c)

Observing

d)

Inferring

9.

The _ is an organized set of investigation procedures used by scientists.

a)

scientific method

b)

scientific theory

c)

scientific law

10.

Should experiments be repeated over and over to see if the results are the same each time?

a)

yes

b)

no

11.

Scientific theories are based on

a)

general assumptions of how systems work.

b)

large amounts of data collected over time.

c)

observations from within only one scientific discipline.

d)

mathematical principles that can be proven true.

12.

What is a law?

a)

Explains a process

b)

Describes what happens

13.

When you are smelling a chemical, you should

a)

Wift

b)

Waft

c)

take a deep breath

d)

smell it for as long as you can

14.

It is OK to start a lab before you read all the directions.

a)

True

b)

False

15.

Waldriana would like to investigate the effect of temperature on the amount of food birds eat. What should she do first to begin her investigation?

a)

develop a question

b)

design an experiment

c)

conduct background research

d)

come up with a theory

16.

When is it OK to eat or drink in the lab?

a)

Always

b)

Never

c)

When Stover Says it's ok

17.

What should you do if you break glass in the lab?

a)

Sweep up the glass.

b)

Pick up the glass with your hands.

c)

Tell the teacher

d)

Ignore it; the teacher will clean it up when she sees it later.

18.

I must follow all instructions, written and verbal, about the laboratory procedures given by the teacher.

a)

True

b)

False

19.

I will perform only those activities that have been authorized by the instructor.

a)

True

b)

False

20.

Before you leave the science classroom, you should

a)

clean your work area and equipment

b)

return all equipment to the proper storage area

c)

all of the above

21.

Which scientist developed the atomic theory?

a)

JJ Thomson

b)

John Dalton

c)

Ernest Rutherford

d)

James Chadwick

22.

Electron cloud is based on

a)

Gold Foil Experiment

b)

Matter is made up of small particles called atoms

c)

Nuclear Theory

d)

Quantum Mechanics

23.

He developed the planetary model of the atom.

a)

Rutherford

b)

Dalton

c)

Chadwick

d)

Bohr

24.

What did Thomson discover?

a)

electron

b)

neutron

c)

proton

d)

electron cloud

25.

Subatomic particles with a negative charge

a)

Electrons

b)

Protons

c)

Neutrons

d)

Quarks

26.

Subatomic particles with a positive charge

a)

Proton

b)

Neutron

c)

Electron

d)

Quark

27.

Subatomic particles that are neutral in charge

a)

Electron

b)

Proton

c)

Neutron

d)

Quark

28.

John Dalton stated:

a)

Atoms are tiny, invisible particles.

b)

Atoms of one element are all the same.

c)

Atoms of different elements are different.

d)

Compounds form by combining atoms.

e)

All of the statements listed.

29.

The scientist responsible for "discovering" the nucleus is:

a)

Bohr

b)

Schroedinger

c)

Rutherford

d)

Einstein

30.

He claimed that matter was made of small, hard particles that he called “atomos.”

a)

Democritis

b)

Moseley

c)

Dalton

d)

Einstein

31.

Where electrons are likely to be found as they travel around the nucleus

a)

Nucleus

b)

Within a Proton

c)

Electron Cloud

d)

Within a Neutron

32.

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

a)

Electron Shells

b)

Electron Cloud

c)

Orbitals

d)

Nucleus

33.

Electrons are not factored into atomic mass because:

a)

They are so small their mass is negligible

b)

They're too big

c)

They move so quickly their mass is zero

d)

They're not in the nucleus

34.

What scientist is best known for his "Plum Pudding" model of the atom?

a)

J.J. Thomson

b)

Democritus

c)

Ernest Rutherford

d)

John Dalton

35.

How did Rutherford discover the proton?

a)

Planetary Model

b)

Plum Pudding Model

c)

Cathode tube ray experiment

d)

Gold Foil Experiment

36.

This particle balances the charges from the protons to make the atom neutral

a)

Electron

b)

Neutron

c)

Proton

d)

Nucleus

37.

subatomic particles found on the outermost shell & responsible for the atom's reactivity

a)

neutrons

b)

isotopes

c)

ions

d)

valence electrons

38.

Measure mainly of the nuclear particles: protons + neutrons

a)

Subatomic Particles

b)

Gluons

c)

Atomic Number

d)

Atomic Mass

39.

Value representing the number of protons in an element

a)

Atomic Mass

b)

Atomic Number

c)

Mass Number

d)

Valence Electrons

40.

Atoms of the same element with a different number of neutrons

a)

Ion

b)

Isotope

c)

Gluons

d)

Quarks

41.

Calculation used to find the number of neutrons in an atom

a)

Atomic Mass - Atomic Number

b)

Atomic Number - Atomic Mass

c)

Atomic Mass - Electrons

d)

none of these

42.

Which of the following scientist discovered the current model of the atom?

a)

Schrodinger.

b)

Dalton

c)

Thomson

d)

Dalton

43.

What is the smallest unit of matter that still has the properties of an element?

a)

Atom

b)

Neutron

c)

Proton

d)

Electron

44.

An atom's ground state overall charge is ________.

a)

depends

b)

positive

c)

neutral

d)

negative

45.

J.J. Thomson provided evidence that an atom...

a)

is the smallest particle of matter

b)

contains negatively and positively charged particles

c)

has an overall negative charge

d)

has an overall positive charge

46.

This contains most of the mass of an atom

a)

Electron Cloud

b)

Nucleus

c)

Proton

d)

AMU

47.

True or False: The majority of an atom is made up of empty space

a)

True

b)

False

48.

Bohr's model of the atom proposed that ______.

a)

the nucleus spins

b)

electrons move around the nucleus in levels

c)

neutrons move around the nucleus

d)

neutrons do not exist, but are just paired protons and electrons

49.

How many neutrons are in an atom of carbon-14?

a)

6

b)

8

c)

10

d)

14

50.

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

a)

36

b)

2

c)

40

d)

34

51.

Negative ions are called

a)

Cations

b)

Anions

c)

Neutrons

d)

Electrons

52.

Positive ions form when atoms _________ valence electrons.

a)

lose

b)

share

c)

gain

d)

gain or share

53.

What is the charge of an atom that has lost one electron?

a)

+1

b)

-2

c)

+2

d)

-1

54.

When an atom LOSES an electron it is a

a)

Anion

b)

Cation

55.

Valence electrons are:

a)

Electrons farthest away from the nucleus

b)

Electrons closest to the nucleus

c)

Electrons that just come and go - they don't stay with the atom

56.

What charge does an atom have if it GAINS an electrons?

a)

Positive

b)

Negative

c)

Negative 1

d)

Positive 1

57.

What is the definition of isotope?

a)

atoms of an element with different numbers of neutrons.

b)

materials break down over time at a very consistent rate

c)

A Really Cold Atom

58.

What are the names of the horizontal rows on the periodic table?

a)

The periods

b)

The Groups

c)

Ionization Energies

d)

The Non-Metals

59.

Atoms of elements that are in the same group have the same number of

a)

protons.

b)

protons and neutrons.

c)

neutrons.

d)

valence electrons.

60.

Each column in the periodic table is called a

a)

Group

b)

Period

c)

Unit

d)

Cluster

61.

Elements which are shiny, conduct electricity and heat are called

a)

metal

b)

metalloid

c)

nonmetal

d)

nonexistent

62.

Which is a halogen?

a)

A. Helium

b)

B. Oxygen

c)

C. Chlorine

d)

D. Fluorine

e)

C and D

63.

Look at the periodic table. Which list of elements forms a group on the periodic table?

a)

Li, Be, B, C, N, O, F, and Ne

b)

He, Ne, Ar, Kr, Xe, and Rn

c)

B, Si, As, Te, and At

d)

Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Ni, and Zd

64.

Which is an alkali metal?

a)

Magnesium

b)

Sodium

c)

Iron

d)

Iron

65.

Which is NOT a property of metals?

a)

brittleness

b)

shiny

c)

conductive

d)

malleable

66.

Where are most metals on the periodic table?

a)

on the left side only

b)

on the right side only

c)

on the left side and in the middle

d)

in the middle only

67.

Where are most nonmetals located on the periodic table?

a)

in the bottom row

b)

on the right side

c)

on the left side and in the middle

d)

in the top row

68.

Which two elements are in the same period?

a)

boron (B) and lithium (Li)

b)

phosphorus (P) and oxygen(O)

c)

beryllium (Be) and calcium (Ca)

d)

boron (B) and phosphorus (P)

69.

How Many Valence Electrons

a)

2

b)

3

c)

12

d)

4

70.

How many valence electrons are found in atoms of group 14?

a)

4

b)

14

c)

3

d)

16

71.

Which group has the greatest number of valence electrons?

a)

1

b)

18

c)

14

d)

16

72.

How many valence electrons are found in atoms of group 1?

a)

1

b)

3

c)

6

d)

7

73.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

74.

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

a)

3

b)

7

c)

18

d)

8

75.

When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

a)

The total number of neutrons in the unknown element

b)

The number of protons in the nucleus of the unknown element

c)

The total number of particles in the nucleus of the unknown element

d)

The number of valence electrons in the unknown element

76.

Why are halogens so reactive?

a)

They want to get rid of their only valance electron

b)

They only need one more electron

c)

They are non reactive, they have a full shell

d)

They aren't

77.

What is the name of this element?

a)

Neon

b)

Boron

c)

Carbon

d)

Lithium

78.

How many dots would a Lewis Dot structure of Helium have?

a)

2

b)

4

c)

3

d)

5

79.

How many electrons should Beryllium have around its Lewis dot model?

a)

1

b)

2

c)

3

d)

4

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