Download Comprehensive Science 3 Module 4 Practice Test

Comprehensive Science 3
Module 4 Practice Test
1. ______ typically feel slippery when touched.
 Acids
 Bases
 Salts
 Neutral Solution
2. What is the name of the scientist who discovered that atoms have a nucleus?
 Thomson
 Dalton
 Rutherford
 Chadwick
1. What is the name of the scientist who first developed the periodic table?
 Bohr
 Dalton
 Mendeleev
 Chadwick
2. Bohr developed a model of the atom where electrons
 Are positively charged
 Are mixed with protons and neutrons in the atom
 Orbit around the nucleus
 Travel like waves in the electron cloud
3. Matter




Is the effect of gravity on an object
Is anything that has mass and takes up space
Is anything that feels gravity
Is anything that takes up space
4. Which of Dalton’s Theory was disproven?
 All elements are made up of the same atoms
 All elements are the same
 Different elements are made up of different atoms
 Atoms of different elements combine to make different compounds
5. The elements listed at the far right side of the periodic table are _______.
 Metalloids
 Nonmetals
 Metals
 Transitional Metals
6. The number of protons and neutrons in an atom is equal to ______
 Atomic mass
 Atomic number
 Weight
 Nuclear number
7. All of the following are properties of a metal except ________
 Conduct heat
 Conduct electricity
 Generally have low melting points
 Malleability
8. How many Neutrons would an element have with an atomic number of 4 and an atomic mass of 16?
 4
 8
 12
 16
9. What happens when an ionic bond forms?
 The two atoms share the electrons equally between them
 The nonmetal atom loses electrons to the metal atom
 One nonmetal atom takes electrons from another nonmetal atom
 The metal atom loses electrons to the nonmetal atom
10. A compound can only be separated by _________ means.
 Physical
 Chemical
 Nuclear
 Reactive
11. Which of the following is not a property of an acid?
 Reacts with metals
 Bitter taste
 Reacts with carbonate
 Turns blue litmus paper red
12. A substance that has a uniform composition and is able to be separated by physical means is a(n) ________
 Solution
 Compound
 Element
 Heterogeneous mixture
13. What is the relationship between a compound and the elements it is made from?
 The compound takes on a mixture of properties from the elements
 The compound takes on the properties of the stronger element
 The compound may have properties that are very different from those of the elements
 The compound may have the properties of the most abundant element in the compound.
14. KOH, NaOH, and household bleach are all examples of what type of substance?
 Organic
 Acidic
 Basic
 Carboxyl
15. Which of the following is not an example of an extensive physical property?
 Mass
 Length
 Density
 Size
16. A physical property is one that
 Cannot be observed
 Can be observed by altering the identity of the substance
 Can be observed without altering the identity of the substance
 Must be observed through chemical means
17. All of the following are examples of physical properties except
 Boiling point
 Color
 Size
 Reaction with acid
18. Moving an object to Jupiter would change its
 Mass
 Volume
 Size
 Weight
19. Does ice and water have the same density?
 Yes
 No
20. If an object has a volume of 2.5ml and a mass of 10g, what is the density of the object?
 0.25
 25
 4
 12.5