Chemistry and Physics on ACT Science
Molar mass is measured in grams per mole. You may need to calculate molar mass of a compound. This info is found in the periodic table. Example: NaCl has a molar mass of 58.35 (22.9+35.45) Na:22.9 Cl:35.45
Day: June 17, 2022
Know Your Physics + Chemistry for ACT Science!
– Density = mass/volume – Increasing pressure always raises density. Increasing temperature usually lowers density. When water freezes, it is less dense than liquid water. – Force of a spring = kx k is a constant and x is the amount of stretch or compression. – PE(spring) = 0.5kx^2 – Fahrenheit and Celsius F =[…]
Important Mathematical Equations for ACT Science
– D=RT distance = rate * time – Position is in meters – Velocity is change in position, in meters per second – Acceleration is change in velocity, in meters per seconds^2 – Relative probability: P(X|Y) = P(X and Y) / P(Y) = probability of X given Y
Practice Studying Biology for Standardized Tests
Did you know that the ACT has a science section that tests your ability to interpret scientific data and make observations about the natural world? Photosynthesis: – Light + water + carbon dioxide –> oxygen and glucose – Occurs in chloroplasts – green pigment is called chlorophyll (only in plants!) – Uses solar energy and[…]
Know Your Biology Before the ACT!
Cellular Respiration: – Occurs in mitochondria – Plants and animals – Converts chemical energy (glucose) to ATP – Solar energy –> photosynthesis—chemical energy –> cellular respiration—ATP – Cell membrane – used for active and passive transport
Biology Info for ACT Science
It is important to know basic biology, chemistry, and physics for the ACT Science section! – Facilitated diffusion = molecules go from an area of higher concentration to lower concentration with the help of a carrier molecule – across a selectively permeable membrane – can be with larger molecules – Ribosomes = protein builders of[…]
Advanced Definitions for ACT Biology
Monocot = flowering plant whose seeds have one embryonic leaf (cotyledon) Dicot = plant with seed with two embryonic leaves (cotyledons)
Scientific Terms to Know for Standardized Tests
– Peduncle: the stalk of a flower – Receptacle: the part of a flower stalk where the parts of the flower are attached – Sepal: the outer parts of the flower (often green and leaf-like) that enclose a developing bud – Stamen: the pollen producing part of a flower, usually with a slender filament supporting[…]
Know the Parts of the Cell
– Cell wall: surrounds/protects cell (only in plant cells) – Cell membrane: controls movement of materials into and out of the cell (active/passive transport) – Cytoplasm: watery area of movement – Mitochondria: produces/supplies energy – Chloroplasts: contain chlorophyll (capture sunlight) [only in plants] – Vacuoles: store food/water/chemicals – Nucleus: regulars.controls cell activities – Nuclear membrane:[…]
Facts About the Cell – ACT Science
What is mitosis? Mitosis is the process of cell division. One cell becomes two cells with full chromosomal identity. Stages of mitosis: 1. Prophase 2. Metaphase 3. Anaphase 4. Telephase Cytokinesis begins in anaphase or telephase. Cytokinesis is the division of the cytoplasm into 2 new cells.