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scienze
Questions and answers by visitors named
scienze
Questions (27)
What trait differentiates lilacs from pine trees?
A) Lilacs are vascular plants. B) Pine trees have leaves. C) Lilacs have
1 answer
48 views
a student makes a chart about galaxies and mentions that the universe consists of many galaxies such as the andromeda galaxy and
1 answer
66 views
what happens to the impact of gravity between earth and moon if the moon grows two sizes?
1 answer
15 views
Scientists have discovered a new planet. The planet is in a solar system whose star is similar in size to the sun and is about
1 answer
46 views
A scientist heats 30 grams of calcium carbonate (CaCO3) in the chemical reaction shown. CaCo3 -> CO2 -> CaO.
What is the total
1 answer
54 views
4Fe -> 3O2 -> 2Fe2 -> O3
What happens to the atoms of Fe and O2 during the reaction?
4 answers
39 views
Which is most likely to occur during a chemical reaction?
Mass is conserved. New atoms are created. The original substance
1 answer
31 views
NaHCO3 -> NC2H3O2 -> NaC2H3O2 -> H2O -> CO2
A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical
1 answer
38 views
2H2 + O2 +2H2O
There are four atoms of Hydrogen (H) before the reaction. How many atoms of hydrogen are present after? 5 4 8 2
1 answer
35 views
Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O) to form 10 molecules of of carbon dioxide (CO2). According to
6 answers
118 views
What do elements in the same column (group) on the periodic table have in common?
* They have the same number of protons. They
7 answers
34 views
use the table of temperatures from several areas to complete the statement.
Area X = 22C Y=18C Z=18C Air will move from a) area z
3 answers
28 views
Use the table of temperatures measured in two areas of a house to answer the question.
Area: Downstairs- Temperature: 22C Area:
1 answer
29 views
Which option is an example of heat transfer by conduction?
A) Air getting warm from a radiator B) Pavement heating up in the sun
1 answer
31 views
Samantha is conducting an experiment to investigate how the amount of sunlight affects the growth of plants. She decides to
1 answer
35 views
Sarah is learning about heat transfer in science class. She observes a pot of water boiling on a stove.
Which heat transfer
1 answer
41 views
Michael is probably going to become an engineer. He spends most of his free time building gadgets.
Which of those sentences is a
3 answers
16 views
A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0.2 meter. The ball travels 50 meters down
1 answer
88 views
A person raises a box with a weight of 50 newtons by 0.5 meter. How much work in joules does the person do in this action?
1 answer
47 views
which car has the greatest efficiency?
a 1,200 kg car that travels 15 km per liter of fuel? a 900 kg car that travels 20 km per
1 answer
89 views
True or False?
Wolves made the water quality of rivers, streams, and lakes better in Yellowstone.
1 answer
8 views
What happened to the Aspen Trees when the wolves returned to Yellowstone?
1 answer
7 views
What is moss classified as
1 answer
38 views
Humans and bacteria are similar in that they
A) are multicellular B) are unicellular C) grow and reproduce D) produce energy i
1 answer
6 views
What is a generic term for a tool used to visualize relationships in a classification system
5 answers
39 views
What term describes one type of organism?
1 answer
18 views
Select the most specific taxonomic group that includes all animals that have backbones.
A) the phylum Chordata B) the class Aves
1 answer
8 views
Answers (11)
no, the answer was B
A) Lilacs are vascular plants. B) Pine trees have leaves. C) Lilacs have flowers or D) pine trees produce seeds
A) diagram B) model C) table or D) graph
Studying is an essential part of learning the subject matter. Students who don’t study are thus, to a certain degree, depriving themselves of the learning process. which of these sentences is a conclusion?
sorry b is supposed to say x to Z
Atoms are tiny particles of matter that are made up of three particles. Which particles are located in the nucleus? * 2 points electrons, protons & neutrons protons & neutrons elements & neutrons neutrons
Which one shows a chemical change? * 2 points Rust on a lock. Chopping wood for a fire Mixing cake batter and water. Boiling water
Which statement best represents the Law of Conservation of Mass? * 2 points Matter can disappear in a chemical reaction. The total mass of substances stays the same a chemical reaction. The mass of a substance increases during a physical change. Mass
that is incorrect. the answer choices are 10 15 30 or 20
so the answer is 30?
They maintain their properties. They gain mass. They are rearranged. Or They are lost.
