On the periodic table, which group of elements tend to form positive ions?
Group 16 and Group 17
Group 1 and Group 16
Group 2 and Group 17
Group 1 and Group 2
According to the pH scale, which pH measurement is basic?
7.0
5.5
1.2
9.5
Answer:7.0
Explanation: Because acids are 1-3.9, 4 is neutral and bases are 4.1-7
Can somebody help me with my science HW
Please help me fill this ven diagram in its very simple I just need help
Answer:
I can think of only one hope this will help
: bone is inelastic while cartilage is elastic
please help me with this science question, please only answer if you know the answer. also help me asap, thanks
Answer:
because it was once connected to Africa.
Explanation:
Back in the day, the whole world was a super continent called Pangea and when it started breaking apart due to the tectonic plates, the surface stayed similar, but moved apart
Fill in the blanks:
An ___________ measures wind speed and a _________ shows wind direction.
A.weather balloon; electroscope
B.anemometer; wind vane
C.flask; beaker
D.oscilloscope; seismograph
It's science btw
Answer:
A.weather balloon; electroscope
How many internal parts or “organelles” are there in a plant cell?
im rewarding brainlist and 47 points too whoever answers this question ;-;
Answer:
There are 15 internal parts in a plant cell.
Explanation:
I need some help cuz i don't remember what that long word means!!
Milk (pH 6.7)
Coffee (pH 5)
Ammonia (pH 11.6)
is most basic, and which one is most OH- concentrated
Although Leonardo Da Vinci was well-known for being an artist, how has he contributed to the fields of motion and medicine?
Thx if you help :D
What identifies the levels of organization that make up the respiratory system in order of increasing complexity?
Answer: they are lung, lung tissues, and lung cells.
The International Date Line
Oruns through Greenwich, England
O roughly follows the 0° line of longitude
O is recognized as the location where new days begin
o divides the United States into different time zones
Answer:
The International Date Line, established in 1884, passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth. It is located halfway round the world from the prime meridian—the zero degrees longitude established in Greenwich, England, in 1852.
How can you describe a mineral that has a measure of 1 on the hardness scale, looks dull, and breaks into square chunks?
A. It is soft, metallic, and has cleavage.
B. It is hard, non-metallic, and has cleavage.
C. It is hard, metallic, and does not have cleavage.
D. It is soft, non-metallic, and does not have cleavage.
These celestial bodies are thought to originate from two different sources. Some are called long-period and originate from the Oort Cloud. These bodies orbit the Sun but may take as long as 200 years to complete one orbit. Others are called short-period and originate from the Kuiper Belt in our solar system.
What is this celestial body called?
A) Asteroid
B) Comet
C) Meteor
D) Planet
If the temperature of the Earth's layers increases by about 90 degrees Fahrenheit for every 1 mile from the surface and you are estimating the temperature of a point in the mantle 160 miles below the surface, how hot would the mantle be at that depth?
A. 12,800°F
B. 14,400°F
C. 1.78°F
D. 160°F
Answer:
Temperature Range:
On average, the surface of the Earth's crust experiences temperatures of about 14°C. However, the hottest temperature ever recorded was 70.7°C (159°F), which was taken in the Lut Desert of Iran as part of a global temperature survey conducted by scientists at NASA's Earth Observatory.
Explanation:
BRAINLIEST PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The Miami Blue butterfly is an endangered species in South Florida. Which factor has most likely caused the population decline of this butterfly?
increase in the number of parks
increase in number of homes built
decline in the amount of predators
decline in the amount of seawater
Answer:
B i think
Explanation:
Answer:
B
Explanation:
Help i'll give Brainliest It's important
A student is trying to identify the different forms of energy described in the following chart:
Form of Energy
Description
Example(s)
Energy A
potential and kinetic energy are the basic types
describes how much work an object can do
a speeding car
a pebble sitting at the top of a mountain
Energy B
kinetic energy + potential energy of particles
determines the temperature of a substance
all matter
How should each form of energy be identified?
A. Energy A: gravitational energy
Energy B: chemical energy
B. Energy A: nuclear energy
Energy B: electrical energy
C. Energy A: electromagnetic energy
Energy B: sound energy
D. Energy A: mechanical energy
Energy B: thermal energy
Answer:
D
Explanation:
Freshwater leeches attach to fish and suck blood from the fish for extended periods of time. This results in sores on the fish that often become infected.
This relationship is best described as .
Answer:
Parasitism
.
Explanation:
Jan drew a diagram to compare centipedes and millipedes.
Which belongs in the area labeled Y?
are active predators
have two pairs of legs on each segment
use specialized mouthparts to attach to hosts
use claws to inject venom
Answer:
BBB millipedes have two sets of legs on each segment.
Explanation:
Answer:
The answer is B:have two pairs of legs on each segment.
Explanation:) hope this helps have a great day ! :)
Brainliest would be very appreciated.!
A restaurant advertises that it is environmentally friendly. It describes the solar panels it uses to generate electricity and the locally grown produce it serves. All the meals it offers are prepared over an open wood fire. Food is served on recycled copper plates, and drinks are served in recycled aluminum cups.
Which correctly lists three renewable resources used by the restaurant?
aluminum, copper, produce
copper, produce, sunlight
produce, sunlight, wood
sunlight, wood, aluminum
Answer:
produce, sunlight, wood
The renewable resources used by the restaurant are
produce, sunlight, wood
What are renewable resources?Renewable resources are resources which can be replenished after being used up.
Renewable resources include water, sun energy, wind, trees and animals.
The environmentally friendly restaurant will use things that would not cause environmental damage.
Based on what they use, three renewable resources used by the restaurant are solar energy, locally grown produce and wood.
Learn more about renewable resources at: https://brainly.com/question/79953
The Sun is important in many ways. What is the purpose of the Sun in the food chain? *
Answer:
Most things, if not all, are dependent on the Sun. The Sun causes things to grow, which causes animals to thrive, which causes other animals to thrive, which causes a balanced ecosystem, meaning a balanced food chain.
Explanation:
Conduction is a method of energy transfer within Earth’s systems. Describe an example of conduction, including where the energy transfer takes place and how conduction occurs.
Answer:
Conduction is the transfer of thermal energy from one molecule to another within an object. Conduction also happens between two objects in direct contact if they have different temperatures. The hotter molecule vibrates because of the added heat. This vibration and movement transfer the energy to the surrounding molecules. The transfer of energy continues until all the molecules have the same temperature.
Conduction takes place in solids, liquids, and gases. However, it happens fastest in solids because the molecules in solids are closely packed.
HELP ! DUE IN 41 MINUTES!
WILL GIVE BRAINLISIT!!!!!!
Answer:
they are both chemical changes
Explanation:
Which product has a bitter taste, is slippery when mixed with water, and can damage skin and eyes?
sodium hydroxide
lactic acid
acetic acid
citric acid
Answer:
sodium hydroxide
Explanation:
its a base and it can damage skin
Help! With 22! And 21! I’ll give brainliest. ASAP!
Which of the following statements BEST relates a star's color to its surface temperature?
Question 5 options:
blue stars have a relavtively high temperature
blue-white stars have a relativey low temperature
red stars have a relavtively high temperature
yellow stars have a relatively high temperature
In YOUR OPINION, should the United States try to reduce the amount of nonrenewable resources we use to produce electricity? Why?
Answer: Yes because nonrenewable resources will eventually run out and we can transition into a new era of renewable resource use. This transition would also benefit the environment.
Explanation:
this is a in your opinion question so i just gave a basic answer of what i think
Answer:
Yes because renewed sources will eventually run out
Explanation:
Please help with this science assignment
Help please with number 3 don’t worry I will give brainliest to the best answer!
Pleeeeeease help I’ll give brainliest! With number 20.