1 How is a mixture different from a compound?

2 The number 5 refers to the element’s:

3 Which would be the most likely number of neutrons in an atom of Beryllium?

4 What do all of these elements in the picture above have in common?

5 Which of the following elements is least reactive?

6 Which would be a diatomic molecule?

7 An electron cloud is defined as

8 The atomic number of iron is 26 and the atomic mass is 56. In its neutral state, is will have

9 Which device is used to determine mass?

10 When measuring a small quantity of liquid, which instrument would permit the most accurate reading?

11 In which part of a science textbook are definitions of science terms most likely to be found?

12 Which describes a compound?

13 Which represents a chemical change in matter?

14 How could some of these materials be used to generate electricity?

-zinc sulfate, copper strip, zinc strip, magnets, copper sulfate,

15 Which is the smallest particle of sugar that still has all the properties of sugar?

16 Which is a property of a proton?

17 If a bottle has a mass of 280g and a volume of 28cm³ , what is the density of the bottle?

18 Bob put a liter of gas in his lawn mower. How many milliliters would this equal?

19 Elements are listed on the Periodic Table in order of their

20 Atoms of the same element with differing numbers of neutrons in the nucleus of the atom are

21 What is usually the maximum number of electrons possible in the valence (outermost) shell of most atoms?

22 A particle given off by a radioactive element as it decays contains 2 protons and 2 neutrons. This particle is

23 The temperature at the center of the sun is estimated to be 27,000,000 F. How would you write this in scientific notation?

24 Mixtures can be separated by physical means. Which is not a way to separate mixtures?

25 Gathering information through observation and experimentation is a part of

26 You should report a chemical spill to your teacher

27 The statement, “An object fell 5 meters in 1 second,” is

28 A judgment based on the data gathered in an experiment is

29 The degree of closeness between measured values and the true values is ______ of the data.

30 In an experiment, one examines the variable conditions in the

31 Reference sources to be used during scientific research must always be carefully selected from reputable materials such as

32 Anything that takes up space and has mass is called

33 The amount of matter in an object is called its

34 The scientific notation for 0.000173 is

35 The volume of irregular shaped objects is measured by

36 A cubic centimeter is equal to

37 Mixtures, elements, and compounds are all composed of

38 All substances are made up of elements. Which of the following is an element?

39 Which of the following are characteristics used to distinguish different types of matter?

40 Air is composed mostly of

41 An element with no luster is

42 The symbol for cobalt is

43 In a single neutral atom there is the same number of

44 An element that is in the same family as fluorine is

45 How many atoms of each element are in Fe(NO3)3?

46 Because aluminum oxide has a high boiling point and a high melting point, we would expect that its bonds are

47 Which of the following is a polar compound?

48 Tritium is another isotope of hydrogen. It has two neutrons in its nucleus. What is its atomic mass?

49 Ultraviolet radiation is a part of the electromagnetic spectrum whose wavelength is

50 Four groups of rats are tested in a lab. Group 1 is given a special hormone for muscle growth. Group 2 is given a special multivitamin diet. Group 3 receives both the hormone treatment and the multivitamin diet. Group 4 does not receive any extra treatment or special diet. Which of the following groups is the control for the experiment?