# Science Benchmark I: Part 1 (46)

46 Questions | Attempts: 640  Settings  PART 1:�The students will understand the Particle Theory of Matter and the periodical table. They will identify scientists and their laws.

• 1.
What is a "pure" form of substance that "cannot" be broken down chemically into other substances?
• A.

Compound

• B.

Element

• C.

Atom

• D.

Mixture

• 2.
What is the  "charge" of a "neutron"?
• A.

Neutral

• B.

Negative

• C.

Positive

• D.

Super charge

• 3.
Which process is a "physical change"?
• A.

Digestion

• B.

Burning paper

• C.

Ice melting

• D.

Rusting iron

• 4.
Which "scientific units of measurement" is "milk" measured?
• A.

Kilometers

• B.

Grams

• C.

Liters

• D.

Gallon

• 5.
How many meters would 5446 cm convert? (Must show work on your paper worked out). 1.  Ask yourself, are you converting meters (bigger or smaller) than centimeters.  Then ask if you are going "big to small units" or "small to big units"? 2. Then ask, what does centi- prefix mean and how many zeros are in the unit (1 meter=100 centimeters)   READ BELOW BEFORE YOU ANSWER: *Simply convert to "SMALLER" unit by moving the decimal point to the "right" or "multiply". *Simply convert to "LARGER" unit by moving the decimal point to the "left" or "dividing".  For example, let's say a friend told you that he weighed 72,500.0 grams (159.5 lbs), you can convert this to kilograms simply by moving the decimal three places to the left or dividing; in other words, your friend weighs 72.5 kilograms.  (smaller units are (grams)  to bigger units (kilograms)-72,500 divided by 1000=72.5 Which way do you know to move decimal, left or right?    This depends on if you convert:         -grams to kilograms = smaller to larger = move left.        - centimeter to meter         -millimeter to centimeter                              OR                  -kiograms to grams = larger to smaller = move right.        -centimeter to millimeter        - liter to millimeters   How do you know how many places to move the decimal?    -Move decimal 3 place to left because there are 3 zeros in       kilo- means -1000 and you are going from small to big.     -centi- means-100 = 2 places   1 kilometer = 1,000 meters- 1 meter = 100 centimeters  1 centimeter = 10 millimeters This system is based on the decimal system and base units of 10s.      1. Count the number of zeros in the             number you are multiplying or dividing         by. 2. If you are multiplying, move the decimal point this number of places to the right. 3. If you are dividing, move the decimal point this number of place to the left.
• A.

5.446 m

• B.

54.46

• C.

544.6

• D.

544.60

• 6.
What are the "basic building blocks" of all matter?
• A.

Mixture

• B.

Molecules

• C.

Atoms

• D.

Elements

• 7.
Remember an element is composed of only "one kind" of element no matter how it is divided or broken down. Which of following is an element?
• A.

NaCl (sodium chloride or known as salt)

• B.

He (Helium)

• C.

H2O (Water-the 2 is a subscript-below the line)

• D.

CO2 (Carbon dioxide-2 is a subscript and shoud be small below the line)

• 8.
What has "mass" and "takes up space"?
• A.

Compound

• B.

Mixture

• C.

Matter

• D.

Element

• 9.
What is the "arrow pointing" to in the illustration?
• A.

Atomic mass unit

• B.

Amount of mass

• C.

Atomic number

• D.

Number of electrons

• 10.
What is the red arrow pointing to in the illustration below?
• A.

Periods

• B.

Families or groups

• C.

Rows

• D.

Numbers

• 11.
Which one below is a "compound", which means the two or more elements "chemically" combined?
• A.

He

• B.

CO

• C.

Cu

• D.

Ag

• 12.
Identify the "compound" that contains the following elements and the number of atoms of each element? 3 oxygen, 1 carbon, 2 sodium 3=0; 1=C; 2=Na
• A.

Na3C2Na

• B.

C3NA2O

• C.

Na2CO3

• D.

O3C2NA

• 13.
Which "model of the atom" shows a "three demensional structure" of the atom and shows orbits?
• A.

Electron cloud model

• B.

Rutherford

• C.

Dalton

• D.

Thompson

• 14.
What type of matter has a "definite volume" and a "definite shape" and the particle vibrate?
• A.

Liquid

• B.

Gas

• C.

Plasma

• D.

Solid

• 15.
What type of matter has a "definite volume" but "no definite shape" and moves by sliding past each other?
• A.

Plasma

• B.

Liquid

• C.

Gas

• D.

Solid

• 16.
What type of matter has "no definite shape" or "no defintie volume" and moves rapidly past each other?
• A.

Gas

• B.

Plasma

• C.

Solid

• D.

Liquid

• 17.
What is the name of the "lowest point" on the graduated cylinder that you should look at to determine the measurement of volume by looking at it eye level?
• A.

Curved line

• B.

Meniscus

• C.

Liquid line

• D.

Low point

• 18.
What is the precise (exact) measurement of volume on the graduated cylinder?
• A.

45 mL

• B.

43 mL

• C.

43 g

• D.

43.5 mL

• 19.
What is the measurement on the triple beam balance?
• A.

361

• B.

354.6

• C.

354

• D.

35.46

• 20.
Which scientist said the atom looks like a "solid ball" or "billard ball"?
• A.

Bohr

• B.

Dalton

• C.

Thompson

• D.

Democritus

• 21.
Which scientist was given credit for "discovering" the atom?
• A.

Dalton

• B.

Democritus

• C.

Jimmy Neutron

• D.

Bohr

• 22.
What forms when "two or more elements" chemically combined?
• A.

Matter

• B.

Mixture

• C.

Element

• D.

Compound

• 23.
What is the section of the periodic table called where "all elements" are located to the "left" of the stairstep line?
• A.

Nonmetals

• B.

Metalloids

• C.

Metals

• D.

Lanthanides (rare earth metals)

• 24.
Which elements below are "chemically" similar? READ NOW BEFORE ANSWERING!!!!! Remember FOR ELEMENTS to be similar, they have to be in the "same" family-column (going up and down). If they go across, they are NOT similar.  You must look up each set for each answer to see which ones go "up and down in the SAME column.
• A.

H (Hydrogen) and Ni (Nickel)

• B.

Ca (Calcium) and Cu (Copper)

• C.

Fe (Iron) and Co (Cobalt)

• D.

Cu (Copper) and Au (Gold)

• 25.
What is the name of  the "measurement" that all scienctists use in the United States in order for all scientist all over the world (internationally) to be able to "communicate" with them?
• A.

International System of Units (SI)

• B.

Standard

• C.

Digital

• D.

Analog

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