GET A CLICKER PLEASE Semester Exam Review PLEASE

GET A CLICKER PLEASE Semester Exam Review

PLEASE MAKE YOUR SELECTION Which of the following is a heterogeneous mixture? A) soil B) air C) steel D) salt water

PLEASE MAKE YOUR SELECTION Technology is A) Analysis of chemical behavior B) Application of chemical principles to predict events C) Application of scientific knowledge to solve problems D) Study of scientific processes

PLEASE MAKE YOUR SELECTION The smallest particle of an element that retains the properties of that element is a(n) ____. A proton B atom C electron D neutron

PLEASE MAKE YOUR SELECTION Matter includes all of the following except A) Smoke B) Water vapor C) Light D) Air

PLEASE MAKE YOUR SELECTION Two features that distinguish matter are A) Mass and velocity B) Weight and velocity C) Mass and volume D) Weight and volume

PLEASE MAKE YOUR SELECTION Who was the man who lived from 460 B. C. – 370 B. C. and was among the first to suggest the idea of atoms? A Atomos B Democritus C Thomson D Dalton

PLEASE MAKE YOUR SELECTION The branch of chemistry that includes the study of materials and processes that occur in living things is A. B. C. D. Organic chemistry Physical chemistry Analytical chemistry Biochemistry

PLEASE MAKE YOUR SELECTION A horizontal row of the periodic table is referred to as a _____. A family. B period. C group. D property.

PLEASE MAKE YOUR SELECTION What does the number 14 in the name carbon-14 represent? A the mass number B the atomic number C twice the number of protons D the sum of the protons and electrons

PLEASE MAKE YOUR SELECTION Chemical properties A) Include changes of state of a substance B) Include mass and color C) Include changes that alter the identity of a substance D) Can be observed without altering the identity of a substance

PLEASE MAKE YOUR SELECTION The sum of the protons and neutrons in an atom equals the ____. A atomic mass B mass number C atomic number D nucleus number

PLEASE MAKE YOUR SELECTION The study of substances containing carbon is A) Inorganic chemistry B) organic chemistry C) Analytical chemistry D) Biochemistry

PLEASE MAKE YOUR SELECTION Which of the following changes to a metal is a chemical change? A melting B polishing C bending D rusting

PLEASE MAKE YOUR SELECTION In a chemical reaction, the type of products obtained is largely determined by which part of the reacting chemicals? A protons B neutrons C nuclei

PLEASE MAKE YOUR SELECTION The modern periodic table is arranged in order of increasing atomic ____. A radius B mass C number D charge

PLEASE MAKE YOUR SELECTION Basic research is A) Carried out for the sake of increasing knowledge B) The production and use of products that improve our life. C) The identification of the components and composition of materials D) Carried out to solve a problem

PLEASE MAKE YOUR SELECTION Which of the following is a chemical property? A freezing point B color C ability to react with oxygen D hardness

PLEASE MAKE YOUR SELECTION The study of matter and the changes in matter best describes the science of A) Biology B) Physics C) Microbiology D) Chemistry

PLEASE MAKE YOUR SELECTION The first letter in a properly written chemical symbol is always A underlined. B capitalized. C italicized. D bold faced.

PLEASE MAKE YOUR SELECTION What element has the electron configuration 2 2 6 2 2 1 s 2 s 2 p 3 s 3 p ? A silver B selenium C nitrogen D silicon

PLEASE MAKE YOUR SELECTION When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place? A neither a physical change nor a chemical change B a physical change C both a physical change and a chemical change D a chemical change

PLEASE MAKE YOUR SELECTION The letter "p" in the symbol 4 p indicates the ____. A orbital shape B principle energy level C speed of an electron D spin of an electron

PLEASE MAKE YOUR SELECTION Which of the following measurements contains two significant figures? A 0. 00440 L B 0. 0044 L C 0. 00400 L D 0. 0004400 L

PLEASE MAKE YOUR SELECTION Which state of matter has a definite volume and takes the shape of its container? A solid B liquid only C gas only

PLEASE MAKE YOUR SELECTION How many significant figures are in the measurement 800. 40 g? A two B five C four D three

PLEASE MAKE YOUR SELECTION Isotopes of the same element have different A chemical behavior. B positions on the periodic table. C mass numbers. D atomic numbers.

PLEASE MAKE YOUR SELECTION Express the sum of 7. 68 m and 5. 0 m using the correct number of significant digits. A 13 m B 12. 68 m C 12. 7 m

PLEASE MAKE YOUR SELECTION Which state of matter takes both the shape and volume of its container? A solid B liquid only C gas only

PLEASE MAKE YOUR SELECTION How many electrons can occupy the s orbital at each energy level? a. b. c. d. Two, if they have opposite spins Two, if they have the same spin One No more than eight

PLEASE MAKE YOUR SELECTION How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? A. 50 protons, 50 electrons, 75 neutrons B. 70 neutrons, 75 protons, 50 electrons C. 120 neutrons, 50 protons, 75

PLEASE MAKE YOUR SELECTION Divide 5. 7 m by 2 m. The quotient is correctly reported as a. b. c. d. 2. 8 m 2. 85 m 2. 9 m 3 m

PLEASE MAKE YOUR SELECTION The graph of a direct proportion is a(n) a. b. c. d. Straight line Ellipse Parabola Hyperbola

PLEASE MAKE YOUR SELECTION Helium, krypton, and xenon are a. b. c. d. Alkaline earth metals Noble gases Actinides Lanthanides

PLEASE MAKE YOUR SELECTION Mendeleev is credited with developing the first successful a. Periodic table b. Method of determining atomic number c. Test for radioactivity d. Use of x-rays

Which of the following shows a physical change occurring? a. A peach spoils. b. A copper bowl tarnishes. c. A piece of jewelry turns your skin green. d. A hot-glue gun melts a glue stick.

PLEASE MAKE YOUR SELECTION Which element listed is considered to be unreactive (inert) based on its location on the periodic table? a. b. c. d. Ca P Si Ar

Which of the following observations does not indicate that a chemical change has occurred? a. change of state b. formation of a precipitate c. absorption of energy d. release of a gas

PLEASE MAKE YOUR SELECTION What is the atomic number of silicon? a. b. c. d. 13 14 28. 086 28

PLEASE MAKE YOUR SELECTION A neutral atom of selenium contains a. b. c. d. 34 electrons 78. 96 electrons 45 electrons 79 electrons

PLEASE MAKE YOUR SELECTION The most useful source of chemical information about the elements is a a. Calculator b. Table of metric equivalents c. Periodic table d. Table of isotopes e. Smart phone

PLEASE MAKE YOUR SELECTION Elements in a group in the periodic table can be expected to have similar a. Atomic masses b. Atomic numbers c. Number of neutrons d. Similar electron configurations

PLEASE MAKE YOUR SELECTION A vertical column of blocks in the periodic table is called a(n) a. b. c. d. Period Group Property Octet

PLEASE MAKE YOUR SELECTION The elements that border the zigzag line in the periodic table are a. b. c. d. Inactive Metals Metalloids nonmetals

PLEASE MAKE YOUR SELECTION Which of the following is quantitative? a. b. c. d. The liquid turns blue litmus paper red. The liquid boils at 100 o. C. The liquid tastes bitter. The liquid is cloudy.

PLEASE MAKE YOUR SELECTION Quantitative observations are recorded using a. b. c. d. Numerical information A control Non-numerical information A system

PLEASE MAKE YOUR SELECTION A testable statement used for making predictions and carrying out further experiments is a a. b. c. d. Law Theory Generalization Hypothesis

PLEASE MAKE YOUR SELECTION All but one of these units are SI base units. The exception is the a. b. c. d. kilogram second liter Kelvin

PLEASE MAKE YOUR SELECTION Barium, atomic number 56, is the fifth element in Group 2. What is the atomic number of radium, the next element in group 2? a. 64 b. 74 c. 88 d. 103

PLEASE MAKE YOUR SELECTION The particles in a solid are a. b. c. d. packed closely together constantly in motion very far apart able to slide past each other

PLEASE MAKE YOUR SELECTION Which element has properties most similar to potassium? a. b. c. d. boron calcium sulfur nitrogen

PLEASE MAKE YOUR SELECTION Which of the following is qualitative? a. A chemical reaction is complete in 2. 3 seconds. b. The solid has a mass of 23. 4 grams. c. The p. H of a liquid is 5. d. Salt deposits form from an evaporated liquid.

PLEASE MAKE YOUR SELECTION The symbol for the metric unit used to measure mass is a. b. c. d. m mm g L

PLEASE MAKE YOUR SELECTION The density of aluminum is 2. 70 g/cm 3. The volume of a solid piece of aluminum is 1. 50 cm 3. Find its mass. a. b. c. d. 1. 50 g 2. 70 g 1. 80 g 4. 05 g

PLEASE MAKE YOUR SELECTION 0. 06 cm is the same as a. b. c. d. 0. 000 06 m 0. 006 mm 0. 06 m 0. 6 mm

PLEASE MAKE YOUR SELECTION A chemist who frequently carries out a complex experiment is likely to have high a. Accuracy, but low precision b. Precision, but low accuracy c. Accuracy d. Precision

PLEASE MAKE YOUR SELECTION Written in scientific notation, the measurement 0. 000 065 mm is a. b. c. d. 6. 5 x 10 -4 mm 6. 5 x 10 -5 mm 6. 5 x 10 -6 mm 65 x 10 -4 mm

PLEASE MAKE YOUR SELECTION When 64. 4 is divided by 2. 00, the correct number of significant figures in the result is a. b. c. d. 1 2 3 4

PLEASE MAKE YOUR SELECTION Because most particles fired at metal foil passed straight through, Rutherford concluded that a. b. c. d. Atoms were mostly empty space Atoms contained no charged particles Electrons formed the nucleus Atoms were indivisible

PLEASE MAKE YOUR SELECTION Visible light, X rays, infrared radiation, and radio waves all have the same a. b. c. d. Energy Wavelength Energy Speed

PLEASE MAKE YOUR SELECTION The result of dividing 107 by 103 is a. b. c. d. 1010 104 10 -10