.png){kind=logo}
PDF Download
FREE SCIENCE AND STUDY GAMES ABOUT PROPERTIES
OF MATTER EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -34 Questions and Answers -format set of multiple-choice -Expert- Explanation
Question 1: What are ions?
Answer:
When an atom loses or gains an electron -When it loses an electron it is a positive ion and when it gains one it is a negative ion
Question 2: What state do all metalloids come in?
Answer:
Solids
Question 3: What is a substance?
Answer:
Matter that has the same composition and properties all throughout- Elements are substances
Question 4: How many valence electrons does an atom need to be ?
Answer:
- to form an octet
Question 5: What is an element?
Answer:
Matter made up of one kind of atom
Question 6: What is atomic mass?
Answer:
# of protons + # of neutrons - weight of element
Question 7: Ionic bonding occurs between what kinds of elements
Answer:
Between metals and nonmetals
Question 8: What do all elements in a period have in common?
Answer:
The same number energy levels
Question 9: What are molecules?
Answer:
Two or more atoms that are chemically joined together
Question 10: Where is almost all the weight of an atom located?
Answer:
In the nucleus of an atom
Question 11: What are periods?
Answer:
Groups in the periodic table going horizontally
Question 12: In the isotope chlorine-35 what does the 35 refer to?
Answer:
The atomic mass
Question 13: What do all elements in groups have in common?
Answer:
Have similar properties and form similar bonds- same number of valence electrons
Question 14: Which characteristics describe most nonmetals in the solid phase?
Answer:
Brittle, cannot change shape without breaking, lack metallic luster Question 15: In ionic bonding, electrons are transferred but in covalent bonding they are...
Answer:
Shared
Question 16: What is an atomic number?
Answer:
The number of protons an atom has
Question 17: What is an isotope?
Answer:
An element with a different number of neutrons than the periodic table suggests
Question 18: What are two types of mixtures?
Answer:
Heterogeneous- The same throughout Homogeneous- Different throughout
Question 19: Metals that are malleable are...
Answer:
Easily bent and formed into lots of shapes
Question 20: Metals that are ductile are...
Answer:
Drawn out into wires without breaking
Question 21: Where are neutrons located?
Answer:
In the nucleus
Question 22: What are valence electrons?
Answer:
Electrons on the outer shell of elements
Question 23: How many electrons can each shell hold?
Answer:
First shell- two electrons Second shell- 8 electrons Third shell- 18 electrons Fourth shell- 32 electrons Fifth shell-- 50 electrons Sixth shell- 72 electrons
Question 24: Where are protons located?
Answer:
In the nucleus of atoms
Question 25: What is a neutron?
Answer:
A particle with no charge
Question 26: Covalent bonding occurs between what kinds of elements
Answer:
Between two nonmetals
Question 27: Where are electrons located?
Answer:
Floating around the nucleus
.png)