Chem 115 Exam 1 2025/2026 Exam
Questions and Correct Answers | New
Update
Matter - 🧠ANSWER ✔✔anything that has mass and takes up space
solid - 🧠ANSWER ✔✔Definite shape and volume
liquid - 🧠ANSWER ✔✔definite volume but no definite shape
gas - 🧠ANSWER ✔✔no definite volume or shape
physical property - 🧠ANSWER ✔✔characteristics of matter not associated with
change in its chemical composition
physical change - 🧠ANSWER ✔✔the state or property of matter without any
accompanying change in chemical identities, can often be reversible
chemical property - 🧠ANSWER ✔✔change of one type of matter into another
chemical change - 🧠ANSWER ✔✔produces one or more types of matter that differ
from the matter present before the change
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
, intensive propertis - 🧠ANSWER ✔✔independent of sample size ( density, color,
temperature)
extensive properties - 🧠ANSWER ✔✔dependent on amount of matter examined
(mass and volume)
Law of Conservation of Mass - 🧠ANSWER ✔✔during a chemical reaction, mass is
conserved
Law of Definite Proportions - 🧠ANSWER ✔✔in a given compound, the elements
are always combined in the same ratio by mass
Daltons atomic theory postulates - 🧠ANSWER ✔✔1)matter consists of tiny
particles called atoms
2)atoms are indestructible, in chemical reactions the atoms are rearranged but they
do not themselves break apart
3)atoms of the same element are identical in the mass and other properties
4)atoms of different elements differ in mass and other properties
5)chemical combination of elements to form compounds occur however in a given
compound the atoms of each element are present in a fixed number ratio
protons - 🧠ANSWER ✔✔Positively charged particles in the nucleus
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
Questions and Correct Answers | New
Update
Matter - 🧠ANSWER ✔✔anything that has mass and takes up space
solid - 🧠ANSWER ✔✔Definite shape and volume
liquid - 🧠ANSWER ✔✔definite volume but no definite shape
gas - 🧠ANSWER ✔✔no definite volume or shape
physical property - 🧠ANSWER ✔✔characteristics of matter not associated with
change in its chemical composition
physical change - 🧠ANSWER ✔✔the state or property of matter without any
accompanying change in chemical identities, can often be reversible
chemical property - 🧠ANSWER ✔✔change of one type of matter into another
chemical change - 🧠ANSWER ✔✔produces one or more types of matter that differ
from the matter present before the change
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
, intensive propertis - 🧠ANSWER ✔✔independent of sample size ( density, color,
temperature)
extensive properties - 🧠ANSWER ✔✔dependent on amount of matter examined
(mass and volume)
Law of Conservation of Mass - 🧠ANSWER ✔✔during a chemical reaction, mass is
conserved
Law of Definite Proportions - 🧠ANSWER ✔✔in a given compound, the elements
are always combined in the same ratio by mass
Daltons atomic theory postulates - 🧠ANSWER ✔✔1)matter consists of tiny
particles called atoms
2)atoms are indestructible, in chemical reactions the atoms are rearranged but they
do not themselves break apart
3)atoms of the same element are identical in the mass and other properties
4)atoms of different elements differ in mass and other properties
5)chemical combination of elements to form compounds occur however in a given
compound the atoms of each element are present in a fixed number ratio
protons - 🧠ANSWER ✔✔Positively charged particles in the nucleus
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
